This is the exact opposite of correct. Old school forums were pseudonymous, but managed to do OK on the moderation front because they were often controlled by the community. Tying real world identity to sign-ins just paints a big fat target on those that have the most to lose already, such as minorities.

As an example, check out the myriad articles about Google users being outed as trans when Google started integrating Google+ into everything: https://www.theguardian.com/technology/2014/jan/07/google-ha...