> I'm also kind of curious what you mean by "parasocial" outside of the context of media.

I actually went back and forth on using it - even considering a hedge with a "quasi-" prefix. But it felt apt: plenty of my past "work friends" exist as little beyond a persona that I interact with via LinkedIn. I give a thumbs-up for their job change, we exchange polite offers to get a coffee that we both know neither will accept, and we go on.