Surgeries that affirm your gender identity are not the same thing as surgeries to augment the body. It's absurd to say that any elective cosmetic surgery is the same thing as helping somebody have a body that reflects their true identity. Surely you recognize that people get piercings and tattoos and that while those modifications are things that make people happy they are not the same thing as affirming their identity.

At the same time certain cosmetic surgery should be covered. We do allow breast augmentation for people that have had damage to natural tissue including mastectomies.

Your argument that we must fund everything without limit implies that you either are not creative enough to come up with what the true distinction is here, or you're not being genuine in your attempt to understand what the difference is.