I do hear you but I also take a lot of this with a pinch of salt. People will always use the most extreme examples they can think of to get their point across.
The reality is that statistically it's extremely unlikely that trans-activists will grab hold of children and convince them to get surgeries.
There are exceptions to every rule, of course. Terrible, tragic exceptions that I wouldn't wish on everyone. But we can't (or at least, I won't) go through life expecting the absolute most catastrophic outcome in every scenario. If I did that, I'd never let my children join clubs, go on playdays, go to school, be alone in a shop aisle for two minutes...
All this to say that I have my own opinions around biological sex and the rights of all manner of groups in society. I taught my own values to my children when they were young enough to need that guidance, but I will always respect their ability to think for themselves. What I won't allow is hate, intolerance, or willful ignorance in my home. For me, part of that is choosing to respect other people's choices even if I don't necessarily agree with them, with the usual caveat around danger etc.
The potential for that tolerance to lead somewhere catastrophic is, to me, minute. Frankly, I just do not believe that people are salivating over mutilating the genitals of impressionable children, or that a man will have massive, life-altering surgeries just so he can perv on women in the bathroom. Just like I don't believe that every man becomes a priest/swim coach/scout leader so he can molest children.
We mitigate the risks for everything as best we can when we're parents.
I don't think using they/them is a risk.