[seniorivn]

NixOS updates are drastically smoother, if default option to boot into any of previous updates is enough to never overthink it

[native_samples]

I don't think a platform that requires you to learn a custom functional programming language can be described as having smoother updates, really.

[IIsi50MHz]

Haiku [operating system], while not ready for most people to use ar a daily driver, also has this ability to boot into prior state. Updated an app, or the whole system, and now something's gone pear-shaped? Reboot with the magic key held down and choose a previous config by date-time.