Everyone is that stupid.
Secondly, the only thing that a guy truly ultimately cares about is pussy. Attitude doesn't matter. Naturally, it would be confusing to a woman; because women gauge their sexual interest in an overall checklist of traits, especially attitude and social status. Men, however, only require one trait: attractiveness. I'm talking instinctually. It is possible for them to cognizantly choose which traits would be most amenable to a long-term relationship; but, at the same time, men are born to fuck.
Every single man wants to fuck 80% of the women on Earth. Regardless of negative traits. Sperm and egg. We lose nothing, biologically, from boning a bad quality mate. Women, however, can potentially lose 9 months of mating time with a better male if they get preggers from a bad one: thus, women are picky; men are not.
In addition, it's scientifically proven that in front of a hot woman, males will get stupider.
On the same hand, it's not a gender specific issue. There are plenty of women who bang bad boys and "players", knowing full well what they are. They do this, because they either think they can change them; or, think that his traits are valuable enough to ignore the other. Well, on the same hand, a good majority of guys will view a seething cunt as a good enough, if she's attractive, to ignore her personality flaws.
More than that, literally everyone does this for everything. When someone meets someone they are attracted to, oxytocin starts flowing which dulls their senses to a person's negative traits. It might be really easy to spot from the outside in, but I find it hard to believe that you haven't done the exact same thing: conceptually.