Do people think superrationality, TDT, and UDT are supposed to be useable by humans?

I had always assumed that these things were created as sort of abstract ideals, things you could program an AI to use (I find it no coincidence that all three of these concepts come from AI researchers/theorists to some degree) or something you could compare humans to, but not something that humans can actually use in real life.

But having read the original superrationality essays, I realize that Hofstadter makes no mention of using this in an AI framework and instead thinks about humans using it. And in HPMoR, Eliezer has two eleven-year old humans using a bare-bones version of TDT to cooperate (I forget the chapter this occurs in), and in the TDT paper, Eliezer still makes no mention of AIs but instead talks about "causal decision theorists" and "evidential decision theorists" as though they were just people walking around with opinions about decision theory, not the platonic formalized abstraction of decision theories. (I don't think he uses the phrase "timeless decision theorists".)

I think part of the rejection people have to these decision theories might be from how impossible they are to actually implement in humans. To get superrationality to work in humans, you'd probably have to broadcast it directly into the minds of everyone on the planet, and even then it's uncertain how many defectors would remain. You almost certainly could not possibly get TDT or UDT to work in humans because the majority of them cannot even understand them. I certainly had trouble, and I am not exactly one of the dumbest members of the species, and frankly I'm not even sure I understand them now.

The original question remains. It is not rhetorical. Do people think TDT/UDT/superrationality are supposed to be useable by humans?

(I am aware of this; it is no surprise that a very smart and motivated person can use TDT to cooperate with himself, but I doubt they can really be used in practice to get people to cooperate with other people, especially those not of the same tribe.)