Qualcomm did work together with Microsoft and the Vendors closely together before the launch to create those devices.
Linux device vendors probably did not get the same treatment. So give it time. Also, why not buy a windows laptop and put linux on it?
Yep. Also claimed “it affects all GNU/Linux” while it only really does CUPS and so on.
Just alone full disclosure is a shit thing to do. Do not even mention the part where it was intended as a responsible disclosure.