Your conception of what is racist, bigoted, or judgemental is going to be different from those who have a different worldview from your own. So if you cut out those people, you're going to increase the risk of falling into the echo-chamber that you claim you'd like to not fall into.

As somebody who is a member of an ideologically diverse group of friends that has spirited debates all the time, I can assure you that ghosting those who offend you on a deep level is not the right path foward. The right path forward is to confront those who deeply offend you in a civil but firm way so that you can both become better in the process.