People were mocking them for it on Twitter, and one of the researchers (Anders Fog [0]) called it "funny". It could just be that people were misled into believing that such hardware currently exists, and that CERT decided there would be less confusion to stick to currently-possible mitigation techniques. :)

In any case, I doubt Intel would pressure anyone to remove the generic imperative "buy a new CPU".

[0] https://twitter.com/anders_fogh/status/948904282568392704