Ignore features have a coordination problem. You can ignore, but other people don't and the troll is trying to stir up responses. So you either end up missing

Ignore features have a coordination problem. You can ignore, but other people don't and the troll is trying to stir up responses. So you either end up missing much of the conversation or end up looking like a fool because you're responding to fragments you miss, depending on how ignore works. Ignore buttons also do nothing about someone who is trying to create a wildfire of misinformation to make other people mad about you, they don't know to press ignore.. and an ignore button won't protect you when some kook shows up at your door with a gun.