@mcc paraphrasing:
"we can't have a policy against trolling, derogatory comments, public or private harassment, and other inappropriate conduct[0], because it's an unenforceable policy. there's literally no way of knowing whether something is inappropriate"
also
"we can't require attribution in our license, because it's unenforceable. there's literally no way to know if someone used our code without attribution, and no way we can stop them from doing it"
[0] contributor covenant code of conduct a.k.a. the "we have a coc" checkbox