Almost certainly.
Will it continue to be voyerism or is he on the path to physically harming a child?
Is it worth taking the chance?
Is the latter inevitable?
I'd say it's highly likely.
Have there been any methods of success in rehabilitation for inclinations of this nature?
No.
How do I find out who his prosecutor is to let them know how he misled the Registry? I’m confident that he submitted a false address, not that he “overlooked” an administrative requirement