Sure, but bias is going to be a factor with any system of evaluation. It happens with human moderators, it happens with automated systems, it happens in corporate performance reviews and it happens among 12 of a defendant’s peers convened for a criminal trial. The existence of bias doesn’t pertain to whether or not a given system is scalable.

It is relevant to the objective existence of a problem though, as well as the magnitude of the importance of the problem (importance may vary substantially per instance of censorship).

My experience: - yes there inherent bias, accidents etc - an escalation system can provide double check against petty judgments. Back pressure can be created through the possibility of greater penalties. - obviously there needs to be bias for credible accounts (older, more active, verified IRL, etc) to avoid throwaways.