We already deal with lagging gaming ability as it is, why do we have to have lagging core processors? Not a fan of this at all.
You know the iPad? Custom Apple silicon and it rocks. I believe the new Apple custom Mac silicon would be just as amazing. But the intel->Apple silicion would be like the 68k->PPC or PPC->intel. Would take a while for devs to get on board and you'd lose bootcamp.
I believe Apple has lots of alternatives made up in their lab. But only will use them if forced to. Like they were forced into intel cause the PPC G5 and better just were not up to the Apple standards. So Apple had to find a new and intel were the only others that could do the job. In that vein I think the Apple custom silicon for Macs will only happen if intel becomes unsuitable for Macs in the future.
Apple considers all future possibilities. So the article is technically correct. But will they ever do it. Definitely not in the near future in my opinion.
And gaming om a Mac is great. Despite what many people think. The only issue is certain game developers who either refuse to port to OS X or have poor cider etc ports that are sub par to the windows equivalent game. So blame the game developers there and not Apple.