That’s not how puberty works. Delaying puberty doesn’t make a child develop the “opposite sex’s” puberty. A boy on puberty blockers doesn’t start growing breasts because of the blockers, and a girl doesn’t develop a deeper voice because of the blockers. Puberty blockers pause sex-hormone-driven development. They don’t replace testosterone with estrogen or vice versa. The absence of masculinization is not feminization, and the absence of feminization is not masculinization.
I’m not implying that the single Reddit post you refer to is fake. I’m stating that relying on a single Reddit post as the basis of your entire argument is factually weak.