I think you meant to "here's" instead of "that's".

I haven't heard of anyone using "conversion therapy" on children to make them straight (maybe for teens or adults in the 60s or something, and in fringe groups after that). But there is certainly a booming industry around giving children puberty blockers and hormone therapy

Also there aren't trans children without adults who are leading them into believing that they are in the wrong body, be it through positive reinforcement, abuse, or whatever other means

Your final point is pretty loaded. Children don't have romantic feelings, but they will express fondness for others by emulating things that they see adults doing. I don't think you were a "bisexual child" since you were (hopefully) not being sexually engaged as a child