This get off X, leaving America trope is getting tiring. Why not engage productively? Does everything have to be at teenage level?

Xitter is not designed for productive or healthy engagement. For all the excuses people give for still being there, I think it ultimately comes down to laziness and, to put it charitably, "risk aversion". Not wanting to put in the effort to find content or an audience elsewhere, and fear of pulling the plug before you do. Not sure how patronizing and supporting awful people (i.e. the ownership) is "teenage level" anything. Nothing wrong with being a better person and letting your behavior follow from your beliefs instead of settling for cakes and circuses.

There are hundreds of millions of people on X. If one cant find a circle of like minded people there, one has to take some personal responsibility for character failure.

There is no personal responsibility to take. The algorithm is deliberately tuned to present as much inflammatory and incorrect information to users as possible[0]. If you feel ostracized by the content promoted on X, it is probably because you have a well-calibrated bullshit detector and no extenuating insecurities.

[0] https://www.wsj.com/politics/elections/x-twitter-political-c...

The point wasn't that you can't find people on twitter. The point is that nobody should be patronizing it. It is fundamentally hostile toward you (though not necessarily overtly), and by being one of the people supporting it, the aggregate effect is that you are working contrary to your own interests. This is true of social media in general, but nobody can hold a candle to Nu Twitter.