I still believe in free speech, but now I think that free speech has to come from someone real who actually believes what they're saying. @Bob12345 isn't really someone from the next town over from you, he's a low-paid worker in a troll farm, and his "opinions" are whatever the hell was handed down to him today.

I'd say that full anonymity/pseudonymity works better, but QAnon has shown it's still entirely possible to flood anonymous boards with posts saying whatever nonsense you want them to say -- and to get the rest of the userbase involved in constructing more elaborate rationalizations for your nonsense.