Yes, it's not the idea that Catholic nuns are childless but makes them evil, disgusting people. It's their revolting religious beliefs about queer people that makes them evil, disgusting people.
To take a vow to become a Catholic nun, a woman must affirm the doctrines and dogmas of the Catholic Church, including those teachings that we gay people commit "acts of grave depravity" when we have sex with our partners, and that we are "intrinsically disordered."
So I hold Catholic nuns in extreme contempt. They are vicious, horrible, sickening people. But it's not because they're women or because they're childless.
It's because they accept and promote religious hatred against queer people.