>made statements that could subject him to harassment

Not sure what said statements were, but as described, that is not at all a reason to ban someone. On the internet, legitimate criticism very frequently leads to harassment. That is not at all the fault of the critic, and as long as they didn't intend to cause harassment, it's no reason to ban them.

Perhaps some details will clarify things. ZeroHedge published and publicized an article "Is This Man Behind The Global Coronavirus Pandemic?" with the face, address, and phone number of an individual -- along with an invitition for readers to pay him a "visit".