YouTube tried to fix their comment system by forcing people to attach them to Google accounts with real names. The anonymity is part of the problem (look at how much banning Reddit has had to do due to advertiser pushback. It's not an open platform at all. Voat and 4chan are good examples of what anonymity leads to).
Anonymous comments are always going to go down that path. The way Facebook slowly released and tried to keep all accounts real has contributed to the way it's network works. We see other sites trying to do this like OKCupid which tried to force people to use their real first names.
I personally think there is something that's lost when you lose that anonymity. There is a reality people let themselves be, and there's something valuable that can be learned about society which is overshadowed but just calling comments a cesspool.