>Not even Google reliably lets you fall back to a password, according to the comments in this article.
I logged in with my google password (on my TV, the other method using my phone wasn't working for some reason) the other day even though I normally use a passkey from my phone or computer. It worked just fine.
Sometimes it works, sometimes it doesn't. I've had Google block my login because it was sus (it was a new computer or something...) and they wanted to verify a whole bunch of information. If you haven't given them that info, you just get locked out.