I like a fellow ear-catcher, you give noticeable observations.
Yes, autotune has ruined a ton of music. Some of the greatest sounds in the history of vocals are because of their technical imperfections, not because they are perfectuly in tune or pitch.
Rappers have definitely prospered off of technology, able to promote a vocal hook they would have no business or ability to produce on their own on their CD.. and then inevitably let their fans down once they go on tour.
The problem relies with the fact that as of now.. minimal vocalists can continue to dominate the charts off of attributes that are non-musical. But hey, that's been a complaint for years/decades. I'm not saying the modern artists aren't free from critique, they are pushing the issue FAR more than previous generations IMO.
Do reply. I'm drinking and want to talk music.