It’s also dismissive of the fact that a lot of women give vague signs as their signs of interest. It’s really just a damned if you do or don’t situation. Either you interpret the vague signals as disinterest and move on, or you read them as a potential go ahead and you’re a dick.
Trying to live so that nobody ever sees you as an asshole is a recipe for depression and regret.
But that’s just circular. Girls can’t be direct because guys are assholes. Guys can’t be direct because they don’t want to be assholes. If standards for one must change, guys being ok with being assholes but being direct with their assertions, then so too must the other change standards, i.e. being direct with their signs.