I literally can't find a scientific explanation. The closest is a reddit post that says most blondes turn brunette, so blonde hair is associated with youth. My spouse is an example.
I'm mexican american. White, blonde, and blue eyes = rich hollywood star to mexicans. There isn't much research into the genetic preferences, so it could be a matter of forms of exposure? They watch a lot of american shows? I don't know.
CEO of Proton, Andrew Yen:
I'm still on a two year plan 🥲