It's not transphobic to ask the question, "Is it okay to perform bottom surgery on prepubescent children?"
Really, it's a deeply consequential question. It shouldn't be regarded as off the wall, or right wing, or bigoted to ask whether or not irreversible surgeries should be performed on the basis of the feelings of children who still believe in Santa and the Tooth Fairy.
What's more, if you're one of the rare people who will unambiguously say, "Yes, we should permanently, surgically sterilize children who still believe in Santa because they say that they want it." I'm still gonna think that you're a bad person; but, at least you're open and honest about your beliefs. We can have something resembling an honest debate.
If you're the kind of person who is going to respond to that question with no answer, you're kinda a douche. I recently asked that question to an acquaintance, and the response was the question, "Are you cool with being pegged?" As if that's an equivalent question.
The response of, "No, we shouldn't cut physically healthy, prepubescent boys testicles off, you moron. Now, here's everything else I think and why I think you're an asshole." isn't hard to type. It doesn't take much effort. In fact, it takes less effort than the dodges that I've encountered from people who won't condemn the sterilization of young children.