Agreed. I think most prominently competitive gaming; development where you need to assure it later on actually works as intended on the target platform; and business stuff where parties are obliged by contract to guarantee something works flawlessly and keeps running that way - are good examples.
That laptop doesn't look to me like it was intended to do any of that, so that's maybe why I'm being a bit negative here. It's cool and a nice idea, though...
(And we already have ARM-based retro machines, FPGA clones if popular processors available. So there is no need for them to do the exact same thing.)