Alpha isn't a real thing in the way it was originally described, wolf packs are a family stricture not a group of random dudes following the toughest ones.
The "alphas" so to speak, are the parents and the "betas" are the children. We need to stop using outdated terminology from a retracted study in common language.
"Alpha/Beta" kinda makes sense to describe the manosphere when you consider the context of the study. If you force a bunch of unfamiliar wolves together in an abusive environment, cruel hierarchies can develop. If you live in a society that alienates, dehumanizes, and forces inhumane scarcity, people might find comfort in hierarchical power dynamics. It's not natural to desire to be an alpha, but the result of a manufactured environment.
Since they enjoyed heterosexual sex with them, and only if it could lead to the possibility of having sex with them.
Actually they only ever care if there's potential for them to have sex (if they consider the lady attractive) otherwise they couldn't care less.