A large portion of the world is experiencing political polarization. I see the same things happening on Lemmy happen on other social media websites.
The “if you don’t agree with me you must have the exact opposite opinion” approach to debate seems to be more a problem of the participants than the platform.
Pretty much every time I dare to say anything negative about Russia or China I'm swarmed with illiterate tankie lemmings who jump into the conclusion that criticising one empire automatically means supporting the other empire.
I find that people that do this are often well informed on leftist theory, but know almost no history. I guess it's hard to accept that governing is exceptionally difficult and governments built with the best intentions are still subject to authoritarianism. Also, those governments weren't built with the best intentions, lol.