That is not a thing. No part of rhel is closed up: subscribers can still download the source rpms, and the sources themselves are still the same as upstream. Every change they make to the sources is still pushed upstream for everybody to use.
What is broken is automated rebuilds, and if people have a principle problem because they think libre stuff should necessarily be gratis I think they have the wrong principles.
Regardless of that, the rage bait narrative that red hat is “closing down sources” is that, rage bait.
TLDR: current hardware developments compared to original steam deck wouldn’t allow for significant upgrades with the same level of experience, but they should release a flashy sidegrade like oled switch
While there is little to debate on the first part, I disagree with the second half. Even these little sidegrades usually carry minor hardware differences (the switch itself is just “the switch” but if you ever took interest in modding it you know that there are a lot of generations, all different). One of the greatest features of the deck is that there is just the deck, every deck in existence has the same exact hardware save for bigger storage and slightly different screen finish - underneath a deck is a deck is a deck.
I never want to read “this issue affects steam deck gen2”.