The point I'm trying to make is that 'ease of discovery' is indeed a relevant factor here, and furthermore in this specific case the user was citing his professional experience with a username that corresponds to his own.

I'd be willing to bet he's perfectly alright with someone posting his professional credentials on this site. I know I would be (and have, in fact).

So is it really doxxing at all, then?

This isn't a topic I'm all that passionate about, I just wanted to point out the differing opinion.