These are the bahaviours that escalate. They are the opportunity to stop sex offenders before they go on to commit more serious crimes. But the police treat it as an opportunity to tell sex cases that what they do is fine, boys will be boys, nothing see here.
Sack the lot of them. If they weren't actively contributing to these attitudes they were failing to challenge them. The only coppers not complicit in this are the ones that got hounded out of the job because they tried to challenge it.