Valve won't be releasing a Steam Deck with more performance until at least 2025. Given the smartphone market's reputation for disappointing incremental updates, this is the right choice. Valve should, however, throw gamers a bone with a Steam Deck 1.5.
Pretty sure 2 was the sad was downgraded as a component to one that supports less lanes, but still supports what the deck supports so it's no performance difference. The other parts were also just pulling similar components from different sources and all hardware makers do it to have continuous supply or reduce production costs.
Not entirely true that every deck is the same.
Outside of storage configurations/screen etching, there are some obvious and less obvious differences:
I'm sure there's more, but that's what I can recall from keeping on top of the news.
Pretty sure 2 was the sad was downgraded as a component to one that supports less lanes, but still supports what the deck supports so it's no performance difference. The other parts were also just pulling similar components from different sources and all hardware makers do it to have continuous supply or reduce production costs.