If we accept that premise, that accelerationism worked via the nuclear arms race, it still requires a state actor on par with the United States to successfully goad them into overextending themselves.

I don't think that applies to our current situation. I mean, sure it could work, but we're still looking at that 75 year timeline of letting the Democratic Republic of Soviet America drive itself into the ground, and then our grandkids will stand a chance to take it back.