In a way, I wonder if having no MOT whatsoever might not be better than having an infrequent one. If it's every two (or three or one or whatever) years, drivers are likely to think "I'll replace/repair it if they say it needs it at the next test", whereas if there's no test, they might think "Uh oh, that needs replacing now." But of course, many will not consider it at all.
What really annoyed me about this is the bollocks way it's been reported - "saving hundreds of pounds" yeah, in test fees but that's over the course of a decade, and what about the actual parts and repairs? Journalist, context please!