Having a good idea what opinions you’re likely to see doesn’t mean there’s no point to asking. Certain opinions being prevalent is expected in any community. Any time I make a post, I can be pretty sure there will be certain kinds of responses, but there are typically some that surprise me also.
If you find that the community mentality is so entrenched that people are hostile or disparaging, just block the most offensive profiles and move on with your day.
I block quite a few profiles every day. That’s just how it is these days, when charlatans can convince millions of people to vote and vehemently influence against their own self interest.