Ask HN: Is there a design term for deliberately making a UI more frustrating?

To elaborate on comments below; I agree that the correct term is "dark patterns". And, one common form of dark pattern is to increase "friction" - to slow down or make more difficult what the user is trying to do (or in other cases, reduce friction "buy now, pay later").

I would call your examples "dark patterns".

A word I hear thrown around often is "friction"

It's related to "Enshittification" (https://en.wikipedia.org/wiki/Enshittification) but that term does cover more than just making something they would prefer you not do a confusing labyrinth to deter you from actually doing it.