I found that things became much more pleasant on here when I blocked hexbear. I recently blocked lemmy.ml as well, but I may reverse that if I find that I’m missing too much good content.
I’m open to other ideas on how to mostly avoid people who love conflict or argue in bad faith.
Blocking an instance is a basic option in the web interface for lemmy in the blocks section of your settings. Its at the top. Blocking an instance does not block its users, it just blocks the communities from showing up in your all searches