That's not why people are reacting with laughs. The posts getting those reactions are also going off on anti-tera rants, when the results from the actual suspect test showed that outright banning terastalization is incredibly unpopular.
Multiple people came out and stated that their preference was tera preview, but they voted No Action because they thought that Ban would have the most support - enough to swing the result, given how close the voting was. Why? Because the Ban supporters were emphatic, posted frequently, and all backed each other up, despite actually being only a very small number.
Now we have people claiming the meta is RUINED FOREVER and that we need to Ban Tera! to fix it, but look at the last couple surveys and what do you see? The community as a whole had a positive view on the tier. Maybe that's changed now that Orthworm and Shed Tail have really taken off in popularity (and Shed Tail really does seem to be widely unpopular, I've seen 'not broken' arguments but nobody endorsing it as something they enjoy), but the latest evidence suggests that once again it's a vocal minority raising complaints, while most players are silent and content.
i find this kind of sentiment to be disagreeable, as at its core it is totally vacuous, serving no end other than to stifle opposing opinions. falling back on consensus has zero bearing on whether or not terastallization is banworthy, because not only can lots of people be wrong at once, it's also a total non-sequitur. you're not actually presenting any substantive arguments in favour of preserving terastallization, discussing its impact on the meta & how it functions. in lieu of this, you gesture to something unrelated that at first blush appears to be an argument, but is not.
it's perfectly valid for anyone to raise concerns around metagame elements they consider to be problematic, including ones that have been assessed before. in fact, i'll do that right now:
from the jump the terastallization suspect was a farce. it remains a mystery to me as to why terastallization was given special treatment with regards to complex bans, the degree to which we have never seen before. why can we trim down & try to normalise terastallization, but not any other currently banned element? it's arbitrary & flies in the face of the consistent tiering approach smogon aims for. the next time terastallization is suspected, it needs to be an all-or-nothing binary choice.
the flexibility proffered by terastallization is overwhelming. pretty much any pokemon has the means with which to bypass would-be answers, and in many instances said pokemon already have a limited pool of checks. this increases the role team matchup plays in determining the outcome of games, the flip side of which being that actual plays are less important. it has always been impossible to build a team that entirely covers
every relevant threat in the metagame, but in all previous generations there was feasible room for manoeuvre to win by overcoming the disadvantage. this generation, building a solid team that you can be confident has minimal outright losing matchups nigh impossible. the only reasonable response to such a scenario is to build teams on the extremes, which is what many are complaining about now.
furthermore, because terastallization is universal it can be used at any time by any pokemon & with any variation, it kneecaps the fundamental pokemon skill of information gathering & inference. pokemon is a game of imperfect information, & reading between the lines of your opponent's team structure & play to form a picture of the game is imperative for strategising. when an opponent will use tera, on which pokemon, which tera type & set said pokemon will be, and what the pokemon will do with said set is for all intents & purposes a black hole when it comes to the information game.
also, during play terastallization often presents imbalanced near-guess scenarios, where the reactive player's best play is determined purely by whether or not the tera-using player has the appropriate configuration of moves+typing, and whether or not they will press forward with it now, or reserve it for later. such dynamics are unfair as the risk for the reactive player is always greater than that of the tera user. once again, this also minimises the role of player's actions. (do not try to apply any of this to z-moves, it & terastallization are in different galaxies in this regard)
irrespective of the last few paragraphs, the power boost from terastallization alone is enough to raise eyebrows. whether it be your otherwise relatively weak coverage move now being stab, alongside your other stabs, or gaining adaptability for one stab, terastallization offers a degree of power which itself is often just too much to handle for any non-extreme team.
this is all to say that the variation terastallization brings also opens the door for an unacceptably high level of volatility, which is something we (hopefully) should strive to avoid. pokemon, or at least balanced & competitive pokemon, requires a degree of stability, limitation, & predictability - not in play, but in the interaction between metagame elements, as these are the conditions in which metagame knowledge, capacity for strategy, & player expression win games - not whether or not you risked everything to click the correct move on the specific turn the volcarona, one of 6 pokemon, turned into a grass type thanks to terastallization, or whether or not any specific threat can turn counters into fodder on a whim.
tldr: fuck terastallization
gets a 3 for me, it's just matchup fish deep-fried with cheese and fat to make it extra caloric, nothing new on the table, and I would not bother really with a suspect test
gets a 2, We kinda need this as ghost check, and HOME will give us some checks and counters, so no problem from me
gets a 5, 
