I think a lot of it has to do with definitions. These days a professor having a sexual relationship with a student is automatically seen as predatory because of the uneven power dynamic. Predation is never right, but I’m not sure every relationship with this dynamic is actually predatory. If the student is a willing participant and the professor isn’t holding grades/internships/etc over the student to obtain sexual favors, is that actually predatory? I don’t have an answer, but it’s something I wonder about.