Its a Hypothetical situation that doesn't lend itself well to wishful thinking tbh. Its a logical fallacy to think that you'll be born as an aryan chad if hitler were to live in another universe when you're seeing it from the perspective of an incel from this universe, referring to contradictory statements like "We wouldn't exist. The godly system of eugenics would have erased us" and "We would all be aryan Chads banging Stacies". Like uploading your soul onto a computer as a means to immortality, its never really going to be the real "you", only an emulation of "you". Fate doesn't guarantee that it would be "your soul" which occupies a chad body.
That being said, Would you rather;
1. Be an incel in this world of hypergamy and cope as a subhuman?
or
2. Be an incel of the 1000 year reich and never exist (euthanized before birth) in the first place? Keep in mind that your sisters and women of your ethnicity (other than aryan) also get euthanized due to reich policy of no mischling (mixed race), sexual contact included, they cannot race betray and trade up for an aryan chad.
Me personally, would go for second option, it eliminates hypergamy, all races with their own, all looksmatches with their own, tigers with tigers and lions with lions, all suffering is the same whether male or female.