I would highly doubt the real Willie Thorne said this. The commentators twiddle off about Ronnie enough as it is. None of them called for Ronnie to be banned when he walked out of a match or when he started talking about his sausage at a press conference. Yet when somebody plays slowly and gets the cue ball cleaned a lot or play on in a frame when he requires a lot of snookers against Ronnie they act like it's the disgrace in sport.
Getting back to the point, Ronnie getting to the final of the Masters is as close as you can get to a dead certainty these days. And, if you count the Premier League as an event, you could beat your house and your daughter's virginity on him getting to the final, and still sleep easy.
Whether he'll win the World Championship again is a different issue, or anything else for that matter, but I would be amazed if Ronnie has played in his last final at this point of his career. The only person who seems to beat him these days is John Higgins.