but only as in the modifications to Falcon 9 to make Falcon Heavy, right?

surprisingly not most of the time I checked.

Laptop/Mobile x86 seemed rather competetive to Laptop/Mobile ARM in performance/Watt

Unless they change CPU architectures.

well. there’s already winlator (basically box86 / wine-wrapper for android).
Not as polished and far as Proton is, but the bones are there.

A CPU architecture change wouldn’t be a deathblow.

Also the price scales wayyyy better. Steam Deck starts at 313,65€ now.

if you have less money, buy that, get an sd card, and if you enjoy it put an ssd in later.