I quite like current Twitter (x). It's not really like 4chan which was all idiots - you get some quite thoughtful thinkers on it, including pg who built this thing. Also the 'ask Grok' thing for fact checking actually works surprisingly well - it you reply something like "is that true @grok?" to a comment the LLM replies with usually quite an accurate answer.

If you want to understand something like US politics which is mostly a battle between the left and the right it lessens your understanding to filter out one sides viewpoints and then be surprised by reality.