Wouldn't that be "set of people who are trying to keep their job search below the radar"?

People use throwaway accounts all the time. All you need to do is describe your skills and what you're looking for, as well as a way to contact you.

But that loses the whole point of doing it on HN.

This idea is somewhat cool in that if there were a few people who interested me, I could scan their comment history (or might recognize the username) to get a sense of their style of interaction, thinking, passions, etc..

A throwaway account means there's none of that; and unfortunately, it also means there's no way to distinguish you from someone who read an article and is posting their inflated self-description on HN along with 219 other places.

I'd be curious to see a trial run, but I don't have very high hopes.

I agree this proposal wouldn't be useful to employed people who, thankfully, constitute the preponderance of the profession.