You cannot talk about hardware without talking about how the software runs on it and this subject was about running software (macOS) on an iPad Pro. macOS consumes a lot more resources both in terms of memory and storage than iPadOS and macOS apps consume a lot more CPU/GPU power than iPadOS apps.
Look, this shouldn’t be difficult to understand because we have an example. There are Windows based tablets and they all run hot and noisy. We know what happens already. Microsoft knows this too and created a lite version of Windows for tablets and foldables.
Microsoft's rumored move to a single screen foldable marks the beginning of the end of its third try at smartphone relevance.
www.onmsft.com
When it comes to the iPad, it runs an OS made for it. It’s called iPadOS. Apple is making it behave more desktop like. There’s no discussion about making it dual boot different systems.