@Elizafox I for one have only gotten by on a kind of personalized take on radical acceptance:
1. nobody wants to hear from me;
2. all opinions of me are already negative;
3. therefore none of them have my best interest at heart;
4. therefore none of their criticisms have merit;
5. therefore I have nothing to lose.

So I just talk. I don't block people who disagree with me. I think the blocking, itself, is unhealthy.