True. I just assumed imprecise phrasing.
Google misusing chrome browser history as a hitlist for indexing sounds wild to me, so I tried to see if there's another way.
It also felt unlikely because there's multiple subdomains of mine that aren't indexed, and wildcards+no preload are the only precautions I've made myself for my private sites.
This might also be an EU vs rest of World thing, or my stuff isn't interesting enough to index(in retrospect the most likely reason I suppose)