Denker is a well known reference and has been for many years.
For good or bad (sometimes both) this sort of poor behaviour usually does get picked up by the community and people get weeded out. I know of an FI in the UK recently whose contract was quietly terminated when it was found that he was rather excessively bigging up his status and achievements. Less impressively, somebody who used to post regularly here once failed to get an instructors job because they were considered "unsafe". Specifically they had oversped a rotor when a 30hr PPL - once they had CPL/FI an several tens of times the hours I tend to think that it was just a learning point but, no, several schools turned them down for instructing jobs.
Anybody with any record of "dodgy" behaviour won't last long anywhere near their home patch, and quite possibly further afield as well.
So mitirino will either adjust attitude, or be quietly forced out by the community. The risk, really, is of the damage they cause on the way.
G