IMO Lemmy has revealed that people around the world are more left-leaning and class conscious than I thought back when I was on R*ddit.

All the content is on the extremist-side, enforces attitudes perfect to embolden class wars ...

Yes, unironically and openly, I support and advocate for class war against the capitalist class. The capitalist class wages their class war against the working class every single day in every single facet of modern existence. It's well past time we start fighting back as an exercise of our own individual and collective self-defense. Class consciousness should never have been controversial, and it is only controversial because it encourages people to challenge capitalism.

... and young people (no doubt the majority of people here) aren't worldly enough to know the difference.

You don't need any political knowledge to know my positions. I am literally an anarchist, and I have said so loudly and often. Like me, most of these "extremists" are open socialists and communists and will readily tell you their views and ideologies (many of whom I emphatically disagree with from their left, but I somehow suspect you would consider me just as "extreme", namely for challenging the utility and inevitability of capitalism).

Where's the trove of knowledge? The awesome positive hobbies? If it's around, it's all drown out by the manipulative noise.

Yes, it is a shame that capitalism drowns out all our hobbies, all our positive experiences, everything so completely that we need to waste so much bandwidth drowning out the manipulative noise peddled by capitalists on almost every other platform.

It's full of AI-generated political memes and comments.

I don't recommend completely blocking yourself off from politics forever, but if you really need to take a temporary break like everyone deserves, I recommend making an alt account with all political communities and posters blocked. But keep in mind...you might be done with politics, but politics is never done with you. In particular, capitalism is never gonna ask your permission to use and abuse you.

And really, this is a special case of the fact that you need to curate your own feed. Some other social networks do this for you in ways that compromise your privacy and, frankly, brainwash people into accepting the neoliberal monoculture.