In the context of supplying banned books in the software of a lightbulb, I expect banned to mean a China style ban where possession can get you punished. Not the (current) US version where certain taxpayer funded entities cannot provide the book.
But there might not be a better word for the latter scenario. Surely, few oppose libraries from “banning” pornographic books, so some level of discretion must be used by administrators.
> But there might not be a better word for the latter scenario.
How about age-gating?
From what I can find with a quick look, 'Banned' is most likely using PEN America[1]'s definition, which is “either completely removed from availability to students, or where access to a book is restricted or diminished.”
[1] Free speech non-profit mostly focused on literature.