I think it's best to not enforce behaviours in the code, but leave it up to the community. We do need to guide newbies on what is acceptable and they should be told as soon as they join. Various people do welcome comments with some info. I have done many posts about this and have a general guide pinned on my feed.
The whales have generally proven themselves by their actions (good or bad). Verifying identity if you are posting content that is available elsewhere matters as we get plenty who pretend to be someone else. We just need to strike the right balance of being welcoming whilst dealing with abuse.
!BEER
I think it makes sense. I See some just get frustrated to repeat again and again how to be have better on the Internet. Its not what people learn in school. I See we are on the same Page here.