The theory that anonymity is the cause of bad comments has been resoundly disproven by the existence of Facebook (and Google+, and Twitter) where people post whatever they like using their own real names.

Furthermore, many people need anonymity: https://geekfeminism.wikia.org/wiki/Who_is_harmed_by_a_%22Re...

If you don’t personally need to be anonymous, you are privileged; don’t assume everyone else is as lucky.