Summary: Microsoft is just blatantly trying to obstruct BSD and Linux from even booting on new desktops/laptops, having simply resorted to illegal tactics while bribing those who would otherwise deposit a complaint with the authorities
Background: Aside from the links above, consider that Lenovo (probably more OEMs to come) has become outright blocking Linux from even booting on some new laptops. They're not just preloading Windows, they force people to keep it and use it. They're using the false pretence of "security".
Surely if we had properly-functioning media, then someone would investigate this rather than rely on official statements from Microsoft and WARN notices