Future is using Autotune the way he wants to use it. He is selling records and has a fan base, so he is doing something right with the software. There is really no right or wrong way to use it.
T-Pain seems scorned. He made a lot of money and became very famous. I do not see why he is upset that other people used Autotune and earned success from it. He didn't invent Autotune. He should be thankful for what he accomplished.
Autotune showed a lack of integrity on a creative levels from when it was originated. It started dying out quick and only showed that in the end talent would prevail eventually. T-pain seems to act as though he was a genius by using it but now has to show his come back without autotune and I doubt he will sell nearly anywhere close to what he did 5 years ago. I think he is to pretentious regarding his stuff with autotune!
On one side, I want to think this is arrogant, pompous, and stupid. However, there is that truth that he really created that sound in music and created a huge trend. I can't say I am very familiar with his music but I can say when I first heard him, compared to others, other people did seem like it was more of an experiment than a polished product. This is not coming from someone who likes that style, I never liked it and I have never used autotone or similar in my own music. But, that don't change the fact he put a large fingerprint on modern rap/pop music.
Jamaican dancehall producers have been using autotune long before t-pain and is still using it today but in a very creative & different way. All hip hop producers really should listen & study Jamaica dancehall producers. Such as Notnice with his latest DESERT RIDDIM, Cashflow, chimney records & many more.
As I know T Pain, I officially met him back stage a few years back in Atlanta at a Tech N9ne show, and I know Aaron Connor (the 1st engineer to use Auto Tune for Sher's Believe in Love), Aaron he told me the whole Cher story one night years ago while we were working, I feel free to comment here:
Aaron used the box after seeing it at Namm, he mixed believe then added the Auto Tune box and surprised the producer and the rest is history. He used it as an effect for a new cool sound.
T Pain redefined how an artist uses Auto Tune, he was the first to actually record with the TDM plug on while singing and not after. T Pain perfected singing vibratoless with Auto on while recording the song up front, in this he changed the way every Atlanta artist recorded, which spread everywhere.
Cher or Roger Troutman, Peter Frampton or some others. I don't want to discredit them, I really don't want to credit T-Pain all that much but it's different when you have a genre that never used it. People credit Run Dmc for collaborating with Aerosmith, bring rock into the equation but rock had been sampled before that, it's just different when you change the mentality.