My personal laptop runs bluefin-dx, while my family's computers run some version of Debian. On those computers I've very recently had to go in and perform some post-update surgery to fix things that updates broke. This has thankfully been something that doesn't happen frequently, but all the same, I can't wait until we upgrade their hardware and I switch them over to bluefin. Automatic updates on immutable images is the way to go for the future of the Linux desktop.
I used to be against automatic updates, but bluefin changed my mind. I draw a distinction between *installing* software (exerting control over what runs on my computer) and *updating* already-installed software, which is a maintenance task.
I *had* to update manually in the past, because updates sometimes broke things, and knowing what changed made regressions easier to troubleshoot.
Updates are more reliable on immutable systems, so I'm comfortable delegating/automating package maintenance.
@jlcrawf I don't believe bluefin *requires* them, and I believe you can disable the service (or otherwise even if you couldn't, you could easily respin the image to disable it), however they *are* on by default.