Again, I’m not saying anyone should get these surgeries before 18, since they’re irreversible. I agree with you on that.
But I find your claim of “transgender ideology being pushed onto kids that young” to be rather weird. By the literal interpretation of such, I also agree. No one should have any major ideology forced down their throats at that age. But to frame it a bit looser, I see no harm in children being aware of queer folk. Maybe not preschool age, that’s a bit too young, and there definitely should be no political slant on how they are portrayed, even for older kids or teens.
And yes, nothing is 100% safe. That being said, these surgeries have shown to have a significantly lower regret rate than other surgeries. These rates tend to be lower than 1%, while the average for other surgeries is closer to 14.4%. Though that number was admittedly done through a Google search, and the average may be influenced by outliers. But back to the point: if these surgeries were any riskier than any other, then why is there such a low regret rate? While it may not prove them to be safe outright, it does hint towards that conclusion