No I don't think it has led to an increase in child abuse but it has quite clearly turned a blind eye to that which was happening. under its own umbrella
I am no longer a member of the church so cannot spek for others.
Well, they do say. "Once a Catholic, always a Catholic" and I think, to some extent, it's probably true. When I (in my thirties) made a serious effort to return, as it were, to the faith of my childhood and then later realised that it genuinely wasn't for me, I found it very hard and quite painful to break the newly forged link.