What communities or instances do you have blocked to make your Lemmy experience more enjoyable?

I have to make some assumptions about you here, forgive me for the parts I miss on.

From your post history I feel you are asking this out of a sincere belief that rational debate over every topic leads to greater understanding and more positive outcomes. This is a noble belief but it is not born out by real world experience.

I was there when 4chan got overrun by stormfront, I was there when Digg was overrun by powermods, I was there when reddit was overrun by MAGA and in EVERY one of those circumstances the initial crack that gave space to the bad actors that would come to subvert those platforms was the same mistaken belief you have; that open debate about every topic is acceptable and productive.

There are some ideas that need to be deplatformed if the platform they are hosted on is to continue being a positive community. Humanity isn't nearly as rational as you assume, and even if you personally feel yourself resilient to such platform manipulation, the vast majority of others are not.