The producers love Mason don't they.
They gave him 30 seconds of airtime to show his audition. Since then, they've given him loads of airtime with his diva strop, the six chair challenge, kicking him off the competition then bringing him back for the live shows, and now saving him over someone who can actually sing really well.
It's as if Mason signed a contract that made him benefit the most. That place in the final is looking more and more promising. Shame they're putting all this effort into making Mason Noise happen. He'll be forgotten in 18 months time.