How do you know it’s astroturfing? I see this claim about comments on Reddit all the time. Most of the time it is just fan boys in my experience.

Shit, I’ve been called a troll for X-cause or a corporate shill for company-Y.

If I disagree with this person, they most be a troll.

If this person is defending a COMPANY they must be a shill.

Not saying it doesn’t happen ever, but I think people are a lot worse at identifying that stuff than they think they are.