For me it works precisely because it's being played for laughs since it's so completely off-the-wall ridiculous.
Is it really that ridiculous though?
Thinking about it, over the past decade we've seen how... crazy people have gotten on social media, digging up dirt, dogpiling each other, harassing each other, canceling each other, running scams etc. And as the show points out, these teachers are barely older than their students (to the point where Gevinson can play one of them even though she's younger than some of the actors playing the high schoolers. They are of an age