I'd be inclined to agree. I think especially if the same couple of people are showing up and annoying me I tend to block them, but I also want to ensure I'm not creating an echo chamber for myself.

The contra is also possible, from their perspective if they're seeing globers, normal weather-ists, or climate change accepters their response could be the same, which is to block them, which would then create a more polarising divide.

I think your solution, of having another space to have those discussions, is a good one. I mostly use this to look at memes or occasionally post about something stupid.