You need to get a library card, and some libraries have an aegis that covers larger groups of people (for eg all Californians), while others only cover those that live in a given city/town.
So no, it’s not unethical, unless you’re pretending to live in CA (or wherever) when you don’t, in which case why bother with getting a card and app and just torrent.
That’s a dip pen – you may notice it is missing a feed. They are pretty cheap to get into!