I understand and don't envy your conundrum.
But you'll also have to figure out whether you want SDN to be a kindergarten or a university, an echo chamber or an agora. Interesting minds are usually non-conformist, and posting here is (practically) a waste of time for many "adults". If that time and contribution does not get any respect (or so it seems), there are much better ways to waste one's time. We are not being paid to have to play by the trainees' rules; that's what we do at work, not in our spare time.
So, if those "youngsters" cannot accept the compromise that the price of dealing with "elders" (and other people in general, online) is that you have to put up with "adult" stuff (i.e. what's considered normal in the non-US adult world), I say good riddance. Unless this "non-profit" is more obsessed with quantity, and not quality, and there are much deeper personal and professional agendas at work than just helping students become doctors.
I am not arguing against being polite and civilized in conversation, just against political correctness and whining. I am also arguing for respecting people's contributions. It may be your palace, but, without our many bricks, it would still be a hut. When any frequent poster just disappears without explanation (Psai was not the first one, by far), others may feel threatened and may wonder why are they wasting their time here.