Arguably there are two issues here. The first is viewing sex as sacred or not. But if you consider it not sacred, if you think of giving someone sex as roughl

Arguably there are two issues here. The first is viewing sex as sacred or not. But if you consider it not sacred, if you think of giving someone sex as roughly equivalent to giving them money, then that brings us to the next issue: Bribery. If the claims are true, then essentially you're expected to bribe people (with sex) who act as industry gatekeepers, or else find it much more difficult to progress in your career. That would be called "corruption"—and to not want to be part of that is indeed a manifestation of "integrity". Now, one could come up with alternate motivations. "So, let's see just how dedicated you are to your career" ... Oh lord, I can't finish that with a straight face. I mean, if someone does think sex is at least mildly sacred, then being willing to do it for career purposes would show dedication (or desperation), but there are probably lots of other ways to measure that, not to mention that you might end up selecting less for dedication and more for sexual blaséness.