The idea was less "Individual humans are ontologically basic" and more: I see I often talking about broad groups of people has been less useful than dropping down to talk about interactions I've had with individual people.
In writing the comment I was focusing more on what the action I wanted to take was (think about specific encounters with people when evaluating my impressions) and less my my ontological claims of what exists. I see how me lax opening sentence doesn't make that clear :)
In light of reading through Raemon's shortform feed, I'm making my own. Here will be smaller ideas that are on my mind.