Yeah, the interests are probably:
1) Attracting pro creators to MacBooks requires having top-tier Blender support and performance on Mac, so Apple's interest is in making it run as well as possible
2) some future AR/VR tie-in
This is very un-Apple-like, but I really, really, really, really hope they keep going in this direction. There's zero reason for Apple to keep being this stodgy. Why aren't they doing "cool nerdy things" anymore? Their built-in apps are fine but why don't they try to make an Apple-sanctioned macOS package manager, with Apple repos and third-party repo support? Don't they understand the incalculable goodwill and excitement that would generate? That by doing this, making Safari a top-tier browser with the best standards support, implementing zero-knowledge iCloud encryption, working with Docker to improve performance, improving Xcode stability, and refreshing Pro Mac hardware minimum yearly even just to keep them competitive, as opposed to letting them languish, like the Mac Pro (2019) and MacBook Pro 16" (2019), they'd more than make up for every bit of illwill they earned with the post-2015 MacBooks and come out ahead of Microsoft with their WSL2 and new Windows Terminal? Apple knows how to be cool to "average people" but they've forgotten how to be cool to nerds, when it used to be effortless for them!
None of this has to do with core strategy. I'm not asking them to open-source macOS here. It's just the basic ability to execute on obvious things that's missing.
For example, in Windows 11 Microsoft really opened up the Microsoft Store, by loosening the eligibility requirements. As a result, it has tone, tons of apps like Creative Cloud, Discord, LibreOffice, VLC, that would never come to the Mac App Store in a million years. That creates pro-user goodwill. So does this Blender news by Apple. I hope Apple realizes how much money they're leaving on the table, because often they don't seem like they give enough of a fuck.