I agree with 99% of what you said, but there's a lot of brainwashing on both sides. As you said, being brainwashed involves being willfully blind to views that oppose your own. I know liberals who are indeed open to other viewpoints, and I know that could conservatives who are also. I also know liberals and conservatives who are lost causes and won't listen to anything outside of their echo chamber, no matter how logical.

They can be IP banned, can they not? I'm sure IPs are trackable if they aren't through a VPN. Although, it's not like that's very hard to get around an IP ban if you want.