So... second guessing someone's retelling of a completely sober, undoubtedly career impacting scenario (one way or another) in the workplace is equivalent to second guessing someone's retelling of a drunken haze of a night?

It's folly to think that the same level and style of scrutiny need be applied to both. You aren't wrong to paint the alternate picture for your friend's case, but it's sidestepping the issue in question (e.g., potential harassment in the workplace) to attempt to make that equivalency here.