This forum has always fluctuated politically over the years.
Theres a reason there’s an actual politics category on here. That category has existed for at least as long as I’ve lurked on this forum. (Over 5 years.) Edit: the earliest post in the politics section is 16 years old!
I think it seems different to you perhaps because instead of people discussing things rationally, one side pulls out the card of race, Hitler, Nazi, Orange Cheeto in order to shame the side they disagree with. That, of course, fosters more discussion and causes it to devolve into destroying one straw man argument after another.
Theres an epidemic of putting emotions over rationality in politics lately. Emotions were always a factor, but people used to be able to put their emotions aside and make judgements based off of reason and logic.