The issue that stuck out to me is the fact that top hits of "how to do X" on the web, often lead to bad solutions, bad practices, outdated info. And, they keep spreading forever. Someone finds the bad solution, copies it into their code, someone else references their code, copies the bad solution again.
I have no solutions to fix this but I sometimes see it happen where someone asks a question on S.O. or Reddit. Someone posts a bad-practice solution that happens to work. It's marked as the answer, upvoted, and now it spreads like an infection.