I would say that abuse of faith is very very dangerous. Faith is entirely personal and any attempt to to impose it on those who actively reject it is unacceptable.   I think that is what Dawkins is focussing on. In my experience children who have been educated in Catholic schools are well able to question Catholic doctrine. ( I have worked in Catholic schools and know that to be true). In fact, I have encouraged young people to question religious teaching because faith that is not arrived at freely is no faith at all.

Sexuality and relationships between adults are complex and challenge the understanding of those not directly involved. I hope that I will never sit in judgement on others in this (or any other) matter. We must all answer for our own behaviour not that of others. The fact that I have not committed adultery is probably down to luck as much as anything else.