The real question is "would it be wise?" The idea that you can "no platform" your opponents indefinitely without ever engaging their arguments usually ends badly. If one side is opportunistically throwing together every single grievance (both legitimate and imaginary) and the other is totally ignorant of what they're saying and refuses to even talk to them, the side that runs away from discussion grows weaker while the other side grows stronger.

If you want extremist views to have free reign, then keep avoid them until they form a broad enough coalition of the ignored and disaffected to take power, I guess.