Ujm is right; while arayos are a problem anywhere, first of all, “miutan barayos” – it’s a minority. But it’s simple and clear that if a community is lax in the gedorim which prevent arayos, and downplay the severity of the issue altogether, they are definitely going to have more of it than if not.
I have no idea where you got the fantasy that a large percentage of rabbonim who are involved in gitten are corrupt.
Also, for gerus…are you serious? MO produces gerim that are questionable on a regular basis – ever see ivanka trump? She admitted to not keeping every halacha, saying in an interview that “we’re more religious than some, less than others,” while walking around dressed like a shiksa.
And she’s far from the exception. MO converts often know and keep very little.