I think if you're super skinny and you're bald or something it could look pretty bad, but I don't think people genuinely truly care. I look like a literal baby and kinda have an odd head and no one really has ever cared until I lost my hair and got fat AF tbh. The guy up top also isn't bad looking and I think his hair compliments his skull shape. I think it looks better with certian aesthetics. Like a hercule-chad would probobally look a little off compared to a more refined alpha male in a suit and medium length hair would. At the end of the day. It's not make or break unless you're litterally just a xenomorph.