You can’t do much about how you look, beyond basic hygene and self care.

That was exactly how I read their comment. Don't worry about trying to reach the ceiling, focus on staying off the floor. Basic hygiene, grooming, caring about yourself.

I think there is so much you can do for how you look - skin care, hydration, diet, exercise, etc. can radically change the way a person looks - but I tend to agree that personality matters much more. My point is that most people seem to get lost trying to make themselves physically attractive, and incel culture like looksmaxxing seem to fall into that logic as well, but they miss that the bar is lower than they expect. And of course, your point is missed by this community as well - that looks are even less important overall than how you hold yourself and interact, etc. - the mental stuff is the most important. Luckily good diet, hydration, and exercise help with that too!