This is conjecture with some wishful thinking. Apple providing the possibility of other OSes, and "inviting" Microsoft to port Windows, does not mean they want anyone to run any OS possible on Macbooks. And they don't do anything to help anyone write drivers for the Mac's numerous proprietary devices, everything has to be reverse engineered.
If Microsoft don't port Windows ARM to Macs, Apple might decommission the "core technologies". Even if they do, there's nothing stopping Apple from changing their mind down the lane, like they have already done on other topics, whatever the intentions of developers that developed them were.
Apple has implemented per OS security. Meaning that you could have complete chain-of-trust with one OS and have an untrusted second install of another OS. No PC has that, and it’s the core idea that allows Linux to be ported. I don’t see how such a useful technology for testing insecure versions of macOS would be removed. Apple backs few technologies, but they don’t often change their mind when they do. The fact of the matter is that Apple benefits from the access it gives Linux. It won’t remove it thoughtlessly.
Ultimately it leads to a discussion about the competition. When you buy an ARM based Surface, can you put Linux on it? Is Microsoft clear you can? Are they providing drivers?
The horse would be Apple putting out a public statement they want to have Linux on Macs. A few comments from developers that they made it on purpose so that other OSes could be booted on Macs is similar, but not even close.
Marcan, in case you are not aware, is one of the people behind Asahi. The only speculation here is yours. Parties directly involved have said otherwise. Hector Martin appears to have given up posting here exactly because of this kind of bullshit. Besides, even if Apple did come out and say it, you'd still trot this nonsense out.
Marcan is directly involved in the reverse engineering. He is not involved in Apple's decision making on what they want to allow on their precious platform, which they tend to really lock down in every possible way.
> Besides, even if Apple did come out and say it, you'd still trot this nonsense out.
No. Apple saying, unofficially, they welcome Microsoft, and Apple coming out and saying they love Linux and want it, would be different. That wouldn't be any guarantee that they won't change their mind or are just hypocrites, but it would still be more meaningful than "technically it's possible, there is no official anything (only an official welcome to MS Windows, but sure, Apple absolutely want Linux on Mac to be a thing".
If Microsoft don't port Windows ARM to Macs, Apple might decommission the "core technologies". Even if they do, there's nothing stopping Apple from changing their mind down the lane, like they have already done on other topics, whatever the intentions of developers that developed them were.