Upstream images vs bazzite: https://github.com/ublue-os/countme/blob/main/growth_upstream_with_bazzite.svg
My prediction: bazzite may have more installs than Fedora KDE by the end of the year.
So, the main advantage is that it is ensured that an update will not brick the system?
That is pretty neat, but it's been quite a while since the last update which broke something for me. And that was either on arch of switching Debian version.
I reckon it is nice that you ensure updates won't break anything, even though I'm not sure that can be ensured, in most cases I had it was the repo itself which made mistakes in packaging the software who broke it and I don't think there's solution for that. Either way, I myself do not see this such an advantage as to displace the pain of having everything run in flatpak.