I think this review got it wrong about Project Bluefin** because essentially there are two methods of installing software: brew (I'm not massively keen but it mostly works for Linux compatible software) for the command line and Flatpak (essentially Gnome Software is used as a frontend for Flathub)*. ujust is just a front-end and a play on the idea that "you just ...) ie 'ujust upgrade' etc. I think if I was bombarded with distros I may have missed it. A reasonable point about non-technical users though.
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" although... Some Flatpak software, a shrinking amount, are not perfect. For instance while my email and web work fine as Flatpaks I've set up a distrobox with its own home directory for photography stuf (it is very easy to reintegrate into the desktop via 'distrobox-export --app myapp' from within the container), and similarly for more technical stuff - I have two or three dedicated Rust distroboxes (basically ad-hoc) with their own Zed or (ghastly telemetry/enshittification trojan horse) VSCode where necessary, with their own home directories (easy as 'distrobox create --name blah --home -/newfolder --image image_name'. 'distrobox enter blah'. It's far from secure, even with root switched off in the container, but it's not designed for such restrictions). There is Podman Desktop and Box Buddy as part of the base Bluefin developer installation but I think such things aren't entry level concepts. Boxbuddy is probably closer to entry level. In that regard the review is accurate. If a person regards just Flatpak as the principle installation method it is entry level friendly and has a good attitude towards documentation. rpm-ostree is there but system upgrades are less laboured because it's based on container images. There is no such thing as perfect in all situations but I do think immutable systems are the way forward with a much clearer separation between system and users like MacOS and easy roll-backs if it misbehaves. Project Bluefin currently represents a good stab at that with Linux. I'm not stanning for it - I'd currently be using Fedora Silverblue or (my preference, but kept rebooting my laptop) OpenSUSE Aeon if Virt-Manager was easier. Vanilla OS looks good also but I don't have time.
** The website for Bluefin:

Bluefin
The next generation cloud-native Linux workstation, designed for reliability, performance, and sustainability.
There are bound to be typos because I think faster than I type and it's before the afternoon.
Morning tune: