Had a discussion about this with one of the Nushell contributors, I am conflicted about it. I think the idea of it is somewhat amazing but also somewhat horrendous. I think the concept of this is a step in the right direction in terms of evolving the shell into something better than the traditional shell with concepts from more modern shells, but still has a way to go before adoption is more widespread. My 2c.

I agree with a bunch of the comments here but wanted to add that there's a decades-long legacy of good FOSS/Linux support on Thinkpads. Before any of these companies existed, Linux was running pretty reliably on Thinkpads.

I do like the newer options with these newer manufacturers, but I won't be getting rid of my Thinkpads any time soon. I'm running a Framework now too.

Have zero issues running Fedora 38 Sway Spin on mine.

How does the immutability come into play with Nitrux vs, say NixOS?

I've used Arch, Manjaro, and Endeavour. For ease of use it's between Manjaro and Endeavour and I'd pick Endeavour. Arch is great too. When you're ready to go deeper, give it a shot.