To all the people telling you that this hurts children, I promise it doesn't
I can't possibly imagine what something like this might have done for me as a kid. Maybe I would have had the courage that many seem to find these days. Trans kids are always going to be here, the question is only of whether you'll support them, or tell them they're wrong. At this point, there can be no doubt that trans kids in supportive environments live better lives than in unsupportive environments. Give them the support they so desperately need.
This is exceptional, don't let right-wing Bible-thumpers convince you otherwise. You should support this.