No, being an ethical company they shouldn't actively hinder it. Linux people will give the necessary effort to support it.
No manufacturer ever openly supported Linux in their consumer systems, and never supported Linux in their professional lines (ThinkPad, Compaq NX, EliteBook, XPS, etc.) openly, to not sour their relations with Microsoft.
Linux happened to work by miracle because of well laid out hardware and high quality BIOS implementations. In fact, they were vetting the hardware/software to be compatible with Linux, but never acknowledged it.
Microsoft is trying to close that hole by forcing secure boot and retiring 3rd party CA.
