...Although, attractiveness is of course tied to success as well, with more attractive people tending to be more successful than less, so maybe women are also picking up on this as well?
As in, it's hard to "get ahead" by definition. So anyone that's overtly ahead of the pack has therefore been vetted as superior to most everyone else. It's a reasonable proxy for gauging intelligence, charisma, and interpersonal skills without even meeting them.
As you get more information you'd realize he made his millions making, say, a software product so, fine, that lowers the assumption of interpersonal skills and charisma and increases it of intelligence. Regardless, the shorthand implies an excess compared to average.
TL;DR - Arguably, "successful" is a rational and effective way to gauge a mate's value.
I'd agree though on average it does indicate some greater chance at being more skilled, but for me at least, success doesn't directly gauge a mate's value. Like many things, it is a lot of factors that all need to be considered together.
Inherited status is an implication of advantage. Sure, YOU didn't out-compete the herd, but your creators did, and my knowing that /you/, through your parents, are the product of success is status for you, too.
Sure, earned success is /also/ a boost, but... let's not pretend like inherited success is a /detractor/.
Everyone weighs what they know with what they don't and assigns status.
Good looking? Plus! Overtly intelligent? Plus! Very awkward around people? Minus! Inherited status? Plus! Black sheep? Hm... If I respect the family's status then... Minus? If I don't then... Plus?
and so on.
We all know "it is a lot of factors" and quite obviously status is merely among them, including inherited status.
Yeah, for me, success is just one of the factors, but to each their own - and I am sure I'm personally biased, because I have not be as successful as I would have liked in my own career paths. If I was really successful, might be saying something completely different (would hope not, but who knows?).
If it turned out that intelligence outperformed attractiveness, then you could say that it isn't surprising since parental intelligence would keep their offspring alive longer than just being good looking in a challenging survival situation.