Don't have time to quote the four or so people who quoted me, but it can be summed up with:
Am I missing something here? What was the left handed control option for Melee? Goldeneye? Super Mario Bros? Actually, my comparison is flawed because KIU does have multiple left handed control options, including using the CPP if you don't like reversing the layout.
No, you're terrible and should leave Smash. It's not that Sakurai doesn't get it. You don't get it. Smash Bros is a game for everyone. You pick it up, you learn the controls once, and the rest is just figuring out how you and your friends enjoy the game the most. Sakurai even included advanced mechanics like teching and multiple getup options (which even games like SSFIV lack) to give the game enough depth to be fun for people like you. Of course, the items, stages, modes, and "bad" characters you ignore exist for a reason, and the reason is that many, many people enjoy them in much greater number than that of the FGC. There's nothing new in the interview. Sakurai has been saying that sort of thing for years.
Keep in mind that Sakurai did try to leave the series twice already. It was Iwata who kept pulling him back in for Brawl and Smash 4. What makes you think that Smash would suddenly become ultra hardcore and competitive if Sakurai left? Iwata isn't going to hire someone like Ono. He's going to hire someone like Sakurai. Smash 4 isn't just Sakurai's vision - it's Nintendo's vision. Accept reality and stop whining all the time.