Do they? This is the video you're perhaps referring to https://www.youtube.com/watch?v=h2oV1QKUMdM and the person in question was commented upon because they were already in the news as a trans activist making a scene in that same campus (to be allowed to the women's toilets). What counts as an "outing" at this point?

You might not like the tone or politics, but this is tame stuff, pumped up into some kind of evily evil monstery, because it doesn't follow the "Bien-pensant" etiquette. Which is the whole shtick of such people -- to give some controversial opinions and not the same-old.

Besides, people have been making fun and attacking all kinds of other people they disagree with -- or just wanna take a shot at -- for ages, without being de-platformed. Does it only matter when it's done from people on the right/conservative side (similarly to how, back in the day, it mattered only when it was done from the left/progressive side)?

The fussy way people are these days, they would run Zappa and Carlin off the stage today, never mind someone like Hunter Thompson...