I'm glad to see you've gotten a ton of feedback here, and I just wanted to add another comment in support of flatpaks and image-based computing. I've been using Linux extensively for about 15 years now, mostly Arch and Debian Sid. I've been a distro packager, and I've compiled plenty of my own apps over the years.
This past year I took Fedora Silverblue for a spin after following the project for quite some time, and I am convinced that the image-based system approach, coupled with containerized and sandboxed userspace applications, is the future of Linux for most users. It makes so much sense from nearly all perspectives; whether security, reliability, or flexibility.
Integral parts of the system are mounted read-only by default. Simple commands can rollback unwanted changes, upgrade to a new distro release, or even sideload an entirely different OS. System updates are automated, as are flatpak updates, and there is little-to-no risk to stability due to the very nature of the essentials-only system images. And if something catastrophic did happen, you're just a reboot away from rolling it back.
Consider for a moment the collective energy and time that distro package maintainers must undertake on a weekly basis. Much of it simply repeated by each distro, building the same applications over and over again. Flatpaks are built once and deployed everywhere. Think of the collective potential that could be directed elsewhere.
Couple this with containers and the choice of distro matters even less. Arch, Debian, Ubuntu and Fedora are just a keystroke away. Yes, you can run containers on any distro of course, but you don't gain any of the other ostree benefits mentioned above.
I have since moved all of my workstations to Silverblue and I don't see myself ever going back to a traditional system again. If anything, I may start automating my own image deployments, similar to Universal Blue.
Yes, flatpak as a platform still needs some work, and so does ostree, but both are evolving quickly and will only get better with time.
To others who complain about needing Flatseal...in my opinion, this is a feature to be embraced, not loathed. Sane defaults are rarely sane for everyone, and Flatseal exists to give you complete control over what an app can or cannot see and do.