Since it’s been five years (or is it six?) Since they said they were going to make reliability a top priority, I think we can pretty reliably say that what we have is what we’re going to get. Which is a system that glitches fairly often.
As far as locks, almost all of the smart locks that I know are battery operated, and will remain in the state they were in as of the last network command unless they have an autolock feature enabled, in which case they will auto lock after the specified time.
There’s a community FAQ on planning for outages: