What do you expect to gain in doing this?? They don’t need to be told this, and telling them this is bullying. Are you actually trying to hurt them emotionally?? Because telling them this is just cruel. You’re obviously a lot taller than those you’re telling this to, and telling shorter men/guys that they “won’t have a chance” with the opposite sex all over their height is just despicable
Attraction is subjective. There are norms, but everyone has their own preferences. Never listen to anyone who claims to speak for any giant group of people (gender, race, culture, whatever). Most women aren’t going to tell you that, but there are assholes in every group. If they’re speaking for themselves, that’s fine though: no one is obligated to disregard any of your attributes.
When I went bald, there were women who said bald guys aren’t attractive. But then there were some who said they were especially attractive, and most just didn’t care.