Self sorting directly supports the dynamic I described, because feel-good terrible memes don't fool everyone uniformly. Look at both political herds - each baited with acknowledgement of specific real problems, and then mostly misdirected into avenues that rage against nonsensical bogeymen. It's utterly anti-productive and often self-harming, but it sure makes the participants feel good.
The "elites" want you to move in their preferred direction, yes. But much of that bearing is just common sense - so pushing in the exact opposite direction out of spite puts you further behind and suits them just as well.
If you actually want to actually assert your own independence, you have to do the excruciating work of using reason to figure out the right direction to push that actually represents your own self interest.