That's a misleading analogy. We're not debating whether any treatment exists or not, we're debating whether a tiny, carefully regulated medical practice equals mass "mutilation" or a sweeping crisis.
Stage 1 cancer is treatable and rare. Stage 4 cancer is serious and widespread.
Gender-affirming care for minors is more like targeted, cautious, and rare intervention, not an epidemic.
Using cancer stages to justify panic over a medical approach supported by decades of research and expert guidelines is fearmongering, not a serious argument.
It's in the realm of asking: "Why can't we stand on the sun at night?"