Not an answer, but some observations:
- Most right-wing influencers appear to be grifters who have a strong financial incentive to attract and keep an audience (to sell supplements, overpriced gold, crypto, pillows, etc). They obviously think right-wingers are easy marks (I remember watching a Trump speech on OANN or NewsMax or something, and the ads were insane).
- I believe many right-wing influencers are funded by wealthy ideologues and state actors (as has been confirmed for at least Tim Pool and Dave Ruben)
- Platform algorithms intentionally or unintentionally boost right-wing content.
- Jordan Peterson is an "intellectual" who's appeal first came from his self-help books and talks that are targeted toward disillusioned boys and young men (i.e. he does focus on ID politics; just on the identities with the larger numbers, wealth, and power). I actually don't think he's a full-on grifter; but he still has the strong financial incentive as grifters (to sell books and "educational" courses).
- Like Jordan Peterson, Andrew Tate heavily relies on ID politics; but I believe he is a grifter.
- Actual "intellectual" discussion is boring to the majority and none of the very popular influencers on the left or the right do much of it; and when they do, their view numbers are much less.
- Right-wing "explanations" and "solutions" are often easy sells. These aren't complex systematic issues, migrants and DEI are holding us back. A strong man will take care of everything; you don't have to do anything.
I'm not sure I agree with your statements on "extremism" and social issues.
What do you mean by "extremism?" I rarely see anything I'd consider "extreme" on the left (except on Lemmy, lol). However, extremism seems pretty popular. The Republican party is now pretty much mask-off fascist; can't get much more extreme than that.
I may agree with you on not focusing on social issues too much. However, they are strongly intertwined with economic issues. The disadvantaged and demonized are more easily exploitable, which drives down wages and conditions for everybody. If rights can be taken away from one group, they can, and will be taken away from another (often rights are taken away from the whole using a group that's been demonized as the false pretext).