Is he banning them for disagreeing, or for people calling him a pedo over an autistic semantics discussion?
Mind you, I agree that when you hold controversial opinions about certain topics people are likely to discuss, you shouldn't be a mod. Then again, if you value your sanity and blood pressure, you shouldn't want to be a mod anyway - it's a thankless job.
At least this is opt-in, and Firefox still allows for manifest v3 extensions, and, on the whole, isn't using a engine funded by a billion dollar company that's doing everything in it's power to spy on you.