In America, most political discourse has degenerated into "the [Republicans/Democrats] are destroying this country with their [fascist/pro-crime/capitalist/socialist/homophobic-transphobic/hyper-woke/etc.] behavior and if you don't vote for [insert person who's going to change exactly nothing], you can expect everything to fail!"
Some people call it "toxicity," and others call it "polarization." But the bottom line is: politics in America is all about doom, gloom, anger, and shouting right now. That's the "negative political orientation" folks are referencing.
This is also why some of us work so hard to keep politics out of our social media experience. It's not really improving anything, and it's bad for your mental health. There's enough awful stuff going on in the world as it stands. People can only process so much without going crazy.
If you're a macOS user, try Leomard. Leomard has a client-side option to screen out specific instances from your view.
https://lemmy.world/c/leomard@lemm.ee