It actually can be true, yes sweetie. It’s worse for guys but for girls too two things can happen. One is you get conditioned to that being the only way you can cum, and secondly if you grind A LOT and very hard, you can even damage your nerves (a real problem for guys as they can really damage stuff down there, very rare for girls).
But the good news is it’s reversible as far as I’ve ever seen.
You just need to stop humping for a bit! Go through this blog, try different ways I describe on here, and edge, don’t cum. Just get yourself really horny and explore playing with your breasts and clit and pussy and ass and mix it all up a bit and take the focus off your poor humped out clit for a while.
It’ll take maybe a week of doing that to reset things and you should find your clit getting far more receptive to other forms of stimulation.
It’s really good to break out of this habit because sex with other people rarely involves humping, so you find you can’t cum during sex. Spend some time discovering different ways to masturbate and it’ll pay off your entire lifetime.
PLUS once things are back to normal, you can totally hump away again, just not as much!