[jackmaney]

> Is "facing consequences" the only way for someone to learn?

No. Most people learn the basic lesson of not hitting job candidates up for dates (and other related ethical issues) either during orientation in their first job or--even before that--when learning about the harm caused by abuses of power.

> Repeated bad behavior, on the other hand... Of course you need to escalate at that point.

From reddit OP's description, it seems likely that the interviewer has done this sort of thing before.