this is literally it. a slayer is the opposite of an incel; someone who has absolutely no difficulty in getting sex. it's implied that he's also someone who IS routinely slaying, but i can imagine a slayer who has chosen to settle down. he doesn't cease to be one just because he's no longer slaying, so long as he could go back to slaying if he wanted to.
they obviously often look like a chad archetype, but there are no "requirements" beyond what i've listed.
I don't doubt that a good looking Arab who is westernized could slay, same with any other ethnic. The only time they will have problems is if they started going after good looking white Anglo girls (the All American type or the bottle blonde bimbos that only want Chads). TBH, I don't have that much of a beef with Arabs, I just don't think they can do as well as blacks and whites can and hate the idea of people putting them at the top in terms of aesthetics.
The Arab would likely be fucking good looking ethnic women and occasionally a cute white girl.