Comment by Ajedi32

> Bots are slowly taking over in forums where they previously would have been immediately spotted and banned.

Failed to mention this but part of the reason for this is that even after getting past CAPTCHA and creating an account, spam bots in online communities have always had to pass a sort of informal ongoing Turing test to not get outed as a bot by human users and banned. In the past, that would happen almost instantly as soon as the bot posted anything. Now they can often go undetected by even human mods for a long time, maybe even indefinitely.