I just have to say I strongly disagree, and I've been on the internet for a while (multiple decades).

The only reason reddit wasn't overrun by asshats even before more subreddits were banned were due to moderation. The same has been true for all forums and BBS:es since the beginning of time.

Truth and sensibility doesn't win out. The loudest voices with the least filtered speech does, because the least amount of filter produces the most amount of output.

With risk of making too broad of a generalization, everything dies without moderation.