Philosophically, I like Fly and have been a customer since very early on.

That said, I dread having to do anything CLI related, which for hobby projects is like once every few weeks.

Glancing at the docs for Sprite, I worry that this will be another CLI where a good 95% of the time that I go to invoke a command, my workflow is interrupted by an auto-updater that takes longer than whatever interaction I'm trying to do and derails my train of thought.

Same. Abandoned fly for Digital Ocean when I found myself hitting my head against the wall trying to get their "just works" to work too often.

flyctl is complicated and, unfortunately, needs pretty aggressive auto updates. The sprite CLI should be much better in this respect.