Bazzite comes packaged with the essentials so that anyone can use it without using terminal. Flatpak is enabled by default and this is the best approach. You can check it out below.
https://docs.bazzite.gg/Installing_and_Managing_Software/
If you’re not comfortable yet using any other terminal package manager other than apt, you can still use bazzite and learn with time. You can install most apps through Discover (KDE) or Gnome software

Could you elaborate?

I think you nailed the first paragraph.
My comment is just to remind that OP is already running an immutable distro on the Steam deck. Valve OS is an arch based immutable distro.
Bazzite was assembled, by some very cool people, to bring the same features of the Steam deck using the already tested atomic editions of fedora to a multitude of “PCs”. Saves time on managing the “Linux” system and focuses on the gaming features, apps and drivers.

I’ve been following her for the past year, it’s a pity she doesn’t have a one time contribution scheme set up. I also can’t support everyone but judging from the donations on KDE people do tend to give small amounts and it really helps. Gonna try to contact her and see if she can accept something like that

NixOS is the sort answer. It’s reproducible across hardware. But I’ve never tested it.

You don’t get an email with the meeting minutes?

“Most” is different from every non American Indigenous (which is the majority) is an alien in the USA. Of course, Europeans were the cause of that :)

And the download page is so simple

Do you have desktop or laptop?
For desktop, I recommend getting an HDD for storage. They’re cheaper, I bought a 4tb Seagate Ironwolf for less than 100€.
I also have a 1tb nvme, where I store things that require fast reads like my gaming collection while the system is installed in an SSD. (The parts were not bought at the same time). For laptop, you might want to stick to what you have inside and just get a good external USB. The usual brands are still good and I think prices have flatten across the industry.