Your statement of "recruit" is exactly the sort of misconstruction I was hoping to avoid.
threatofrain got it right. This is a problem we need to address, but the solutions I've seen thus far don't take unfortunate pathologies of human psychology into account, and when we don't do that, we get very surprised at the lack of results down the line. You're more than willing to try to live in a world where you say "Because we said X this is what's going to happen" but I find that to be far less proactive than trying to ask what actual responses are, as distasteful as they might be, and ways to address them.
My concern is that Rayiner's response, "we prohibit it because we made it a law" is still ignoring the key point. _it's too goddamn easy_ to discriminate and paint it as something else, too many reasons I could turn down ANY applicant, for me to just brush it off as "a law is sufficient." I believe that if this is a problem we _really_ want to fix, it's going to involve delving into some unpleasant trains of thought that aren't really "acceptable conversation" right now. I just worry that by ignoring it, the problem goes unaddressed, and we potentially foment resistance against it.
It feels naive to me to think that just because a law is "full stop necessary" in our moral frame of reference, to think that's sufficient to implement it effectively such that it generates the outcome you want in the long run.