The hypothesis of real name policies was that people would be civil online if their real-world identities grounded them. In reality, the tail wagged the dog.
I mean, it was a theory that was popular in the 00s, mostly because a ton of people at that time didn't have experience with Usenet.
But a lot of vile language was used in the clear, signed with the real names of many individuals. Anonymity doesn't seem to change much. Humans will be humans, whether or not they're anonymous.
I've watched this process turn friends who had pretty mild political leanings to "burn it all down" radicals or transform into right wing talk radio hosts. It's not good.