This is a bizarre take. The chip is more than capable of running MacOS, full stop.
This rumoured product, if launched, would constitute an interesting, but minor, shift in direction for Apple’s laptop business, equivalent to the Mac mini launch in 2005. However, putting iPadOS into a traditional laptop would be an enormous sea-change in Apple’s approach to mobile computing, and would directly contradict many, many recent public statements. It would also contradict logic. No idea how you got to this concept.
Personally, I would love to use this for a travel laptop, because my MBP 14” is too hefty, and my iPad/keyboard combo just isn’t good enough as a replacement computer. And there are a huge number of people for whom Apple laptops have always been too expensive. Massive market potential. If it runs MacOS. Otherwise, what would the point be?