It’s one thing to have differing views, but I’ve seen enough attempted reddit migrations to be relieved that the popular communities in the fediverse so far haven’t been about crazy racist stuff or other extreme right bullshit.
I am also glad that I’m getting away from reddit’s general political shitposting, which was more left leaning. You couldn’t have any proper discourse on there, and even I with my generally more left leaning views recognized that.
I like to think of it as tolerance as a social contract. If you aren’t tolerant, you break the terms of the contract and are not privileged to benefit from it.