Some of us need to use windows for various reasons. There's a bunch of other stuff you can do to prevent spying, they do not fall within the scope of this post.
I'll extend the question: from what does it protect at all? (Answer: nothing, FIDO keys is a hype)
Can you expound on that a bit? It seems like a reasonable solution for a hardware security token. What don't you like about FIDO keys?
Dont ask this troll, this article is not even about fido.