No, height is not a personal failing, but dating apps are also not the real world. If you actually go outside and look around you'll notice all sorts of shorter men with partners, some of them with women taller than they are. If no women ever mated with short men, they would be extinct by now.

Do I really need to make a list for you of the personal failings of way, way too many men these days and the reasons that so many women are giving up on dating altogether? If you aren't currently aware what those things are, perhaps you should do some research on that, rather than making me do it for you.