While I agree Apple had us all worried for a while, especially regarding their pro and desktop strategy, I don't think they are making any strange choices now. In fact, they seem more lucid than ever regarding their pro platforms. On the software side, again I see a massive investment in CG with game and FX companies up front.
Just look at some of the news coming from WWDC regarding rendering, augmented reality, chained external GPUs and all that. This has been happening every year for some time now.
This is all stuff we would have killed for in the QC days, when all we had was sagging openGL support, a buggy editor and no interest in games or realtime media.
To be honest, a metal-only Vuo that takes advantage of the latest built-in features is more what I had in mind when thinking of a Quartz Composer successor. I would rather they dropped the multi-platform ambitions and doubled down on the Mac platform.
Metal is built-in, straight from Apple, and is advancing with each year.It's not going away because it's common with iOS and will likely power the next generation of rumoured hardware.
If VUO could become a front end for all the CG stuff apple comes out with I think they'd be in a good place.