it 100% should support Linux on DeX and later this year Google should be officially launching Android Studio for all AOSP devices so you can develop apps for your Galaxy Fold right on your Galaxy Fold.
I had the Motorola Atrix when it first came out, my first Android phone. The experience with the laptop dock blew me away, and installing chroot and a terminal made it my daily laptop my freshman year of college. It was unfortunately never updated, and the system was just a bit too slow for me.
I'm really hoping the experience on this will be much better, and really get me the convergent experience I've wanted since then.
highly recommend you test out any of Samsung's recent phones or tablets. s8 and up all have Samsung DeX which polishes the Atrix idea to be usable daily.
Samsung is really attacking this from the business side (automatically load work desktop at work) and actually use it for development on the DeX team.
Its amazing that we can now write android apps on android itself.
What a beautiful time we live in.