I mean, if human culture didn't scale because there were more bad actors than good, we wouldn't have ever developed any technology, because stone age assholes would have smashed it. The issue is when bad stuff is easy and rewarding, and good stuff is hard because of systemic reasons. Like robocalls, or campaign finance reform.

So the fact that those changes are occasional and caused by individual humans, and you can, I believe, revert them more easily than they can make the changes, is a good sign. With enough eyes all bugs are shallow.