As a female, couldn't care less unless you're shorter than me (5'4).
For me, I think it is about not wanting to feel bigger than who you are with. The subconscious motivation or evolutionary biology driving that? Idk. But yes, do not worry, not every girl cares that much about 6'0 factor.
I know this guy that is super charismatic and he is like 5'7 or 5'8. I do not think I have ever seen a girl reject him. So yeah dw (and no you do not need magical seduction or charisma powers he is just an example of how it is not an obstacle unless you think it is)