Yes, that's a new capability, it's not a change in the paradigm of a desktop OS (it's also something that's been present for devs in a limited fashion for a while when building iOS apps).
I really don't think you understand the difference between capability and *use*. The iPad Pro is an incredibly fast machine, but it's also a completely different UX and people use it differently and have different expectations than they do from a laptop. People do not expect desktop applications to pause or close when tabbed away from in desktop computing, period. We had that, years ago, we got better, we got real multitasking, there's a reason multifinder on the Apple side was such a big deal. The tradeoffs needed for an iPad style device are not necessary for a macbook pro or air or mini and nobody wants them there. Going there just so you can justify "nObOdY nEeDs MoRe RaM" as a talking point is absurd. And of course Apple *isnt* going that way, again you can get the new machines with up to 16GB of RAM now, but again, for people without access to BTO systems that may not be available, and that sucks (for that matter you can't get the mini with the high RAM amounts you used to, which also sucks since there's a lot of folks who could use that), which is kinda the point people are trying to get through your head here without luck.
BTW the way we get to the merge of how software works that you seem to convinced is here already is having fast enough persistent storage that it becomes RAM, RAM that holds state without power. While there are prototypes of several ways of doing that at modern memory speeds and latency, and some very very expensive and limited pieces of tech out there for it, it's not here yet. It's core memory, mark 2, and we arent there yet for consumers.
