Well that really wouldn't be utilizing containers correctly in that case. As really every noob friendly distro is about as capable. Like Manjaro comes pre-installed with steam and one can enable the Nvidia drivers by clicking the correct option in the settings to auto-detect the hardware and install any proprietary drivers.

I think the real benefit of this judging by the GitHub page is that you could never update the apps directly and instead just update the container image for every device you own so that they all work the same way. Which is a great concept but is not very noob friendly. Unless the method for pulling new containers is automated somehow.

It still seems like a similar disadvantages to using flat packs on hardware with less headroom but I could be wrong.

I only have only gaming PC, and the other devices in my house all serve discreet functions but they can still stream the games from my gaming PC. So I wouldn't want them to share the same os image. Ultimately this doesn't seem for me but I do like the implications.