Hypothetically

Let's say you were a member of a forum on the internet where like-minded people gathered to talk about football. Usually you'd have a mixture of laughs, arguments and good conversations. Let's now imagine that a particular member of the forum behaved in a disruptive way, hijacking debates with irritating questions and pedantic side-issues and (for argument's sake) white nationalist talking points. In this hypothetical scenario the disruptive member might eventually be subjected to a ban from the forum but, undaunted, return under a new identity, often adopting superficially different opinions while exhibiting the familiar modus operandi. Let's say the individuals responsible for management of the internet sports forum (we might call them 'Admins') were reluctant to intervene.

In this hypothetical scenario where banning proves to be no deterrent and members of the community are otherwise powerless to prevent the forum from being derailed, would it be appropriate for individual users to filter Eric?