"Celebrate the opportunity to collect unemployment?" Spoken like somebody who's never done so. Even if your erstwhile employer doesn't contest the claim, the whole process is a clusterfuck at the best of times - to say nothing of these times - and typically yields somewhere around minimum wage, often approaching it from below. If you have a solid savings base, it's a trivial amount. If you don't, it's better than nothing, but usually not enough to make a meaningful difference. And that's if whoever fired you in the first place doesn't make a fight of getting it at all.

I agree that Twitter cancel culture is well out of hand; in fact, I'll go further still and say that the behavior is often not meaningfully distinguishable from 4chan brigading of old. But there should still be a better option for dealing with unreasonable but not actively criminal bosses than getting fired anyway, with the chance of a bare minimum consolation prize.

I don't understand why mobs don't form against the employers who fire people because of internet mobs. They often have a lot of supporters if it's a partisan political issue. The employers are the ones doing the actual harm while everyone else is just saying words.

One guess would be that opponents of cancellation are calm intellectuals who write kindly-worded letters that corporate secretaries chuck in the bin without anyone else taking notice of them whereas angry internet mobs are full of crazy extremists sending death threats and bomb threats, doxxing people, SWAT-ing and that sort of thing which victims often yield to in order to make it stop.