Agreed! PPCMC in itself was a miraculous feat.
Quite. On how many occasions have they informed us that our machines cannot run whichever latest OS release, only for this to be refuted or defeated by members of the Mac community? Some notable examples include officially preventing particular G3's and G4's from running Tiger and Leopard and the patched versions of El Capitan that were created by enthusiasts for early Mac Pro's - which is something that Apple's engineers could have produced.
The Apple of today largely offers disposable computers that cannot grow with you as your computing needs develop and if/when your requirements change, they will have to be abandoned in favour of a new purchase. I strongly suspect that the marketing execs at Apple resent the fact that older generations of Macs are not hindered in this manner and are still in operation - with machines from over 20 years ago continuing to remain viable and capable for a variety of tasks.
Judging by that screenshot, can we safely assume that there will be a G3 version?