ridiculous to ponder that children could be removed from parents who practice mainstream religious adherence.
It wouldn't be because they have a religion, but in relation to sexuality, there are hundreds if not thousands of stories of young gay men and young lesbian women who have faced if not actual violence, but harsh treatment and forced conversion.
And although maybe a small % of religious parents it has and does still happen.
Also similar stories from those thinking they must be in the wrong body, is because of "old fashioned" parents have enforce strict gender stereotypes. It might come as a surprise that attitudes like that still exist, but they do. Think Billy Elliot.
So part of watchful waiting can be about whether a young person is working out their sexuality as much, if not more than, whether they are trans.