Earlier quoted context omitted.
Not saying your VM approach isn't right for you, but: > and because there's no performant way to share disk space for data with MacOS Have you tried a ZFS partition? If it's a desktop system use iSCSI to network storage (I'm not running Linux directly on my Studio or M4 mini but I still put my Home folder on the network)?
I haven't. ZFS might be the answer for my laptops.
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0: By which I mean, for equivalent features. It's possible to go really far out of the normal with ZFS in terms of silly compression and multiple copies of data even within a single OS and checksumming and so on in ways that add computational overhead, but I don't hold that against it vs APFS.