Where it mentions the sheep trials (re puberty blockers) - am I right in thinking that when they talk about a critical window being missed, they mean for kids who go on blockers from say age 12-16 then stop, that they will miss puberty completely?
I read it as suggesting that certain things that normally happen might not, but not necessarily that nothing will happen. So, perhaps once they were stopped and the body started producing its own hormones, you'd get secondary sex characteristics, but the brain maturation element would not happened - whatever triggers that would have been interrupted and won't restart. Or something else similar, that's just a guess.