Meh. I like the guy, but there is a disconnect here. That disconnect is, it's not that people can't sing, it's that they 'want' the autotune fx.
Even with it, you have to be able to sing a bit to get it to sound good otherwise, it's going to sound like shit. Most people that use the tunning programs, known exactly how off to deviate from the correct pitch to get the fx they need.
Will it survive another 20 years or 30 years, yes it will because the people growing up on the sound... most will still be alive and it will be considered "oldies but goodies'' to them.
I love what he's saying, it just comes off as a bit out of touch with whats 'wanted' vs what people 'need'