With all due respect, are you kidding me?
If you were able to wait 12 years for DHD, I honestly believe you should understand the pain of the mains of cut vets/people who like the character in general are going through, praying for the day that their character gets back in smash, which may never happen. People may be obnoxious about it at times, and I would understand where you'd be annoyed by that, but surely you can be at least a little sympathetic?
"When?" Smash Wii U was released only a few months before, and now we're talking like another game is a guarantee? This isn't Mario or Pokemon, which releases games at least every 1-2 years and are the only Nintendo franchises more popular and have more sales than Smash. Sakurai is exhausted, said he wouldn't be directing again. Granted he said this before, but this project I believe has strained him greater than previous iterations. I do believe that Nintendo would get someone else to direct if Sakurai doesn't change his mind, but we cannot state with absolute certainty. A lot can change in six years, whether good or bad. And would we really want another game if Sakurai isn't involved? Chances are, I believe it would be a lot worse, at least in roster choices, but of course it could be a lot better perhaps.