I can't get to the article, so I haven't read it yet and can't comment on it specifically. However, pre-emptive concern is not necessarily FUD. A little sabre-rattling can send a signal to manufacturers that they need to provide an option to disable secure boot or they will tick off a vocal customer base. Waiting until someone has actually locked out alternative operating systems is somewhat too late; the point is to prevent them from doing it in the first place.