Hi OP. I think you are right. People seem to choose a tribe and stick to the party view. There is rarely much space for for nuance or admitting someone in your tribe is wrong, or someone in the other tribe has a point. Anything inconvenient is fake news, conspiracy and so on. On both sides.
You can roughly trace political party lines over these tribes, but there are a few crossovers, the trans debate being one and you can pretty much guess what the talking heads on TV/Twitter etc. will say before it comes out.
People need to grow up and treat issues on their merit and not according to their tribe orthodoxy.