I just remembered this idiotic thing. Don't watch the whole video because your brain will deprive itself from oxygen as a defense mechanism from this stupidity.
https://youtube.com/watch?v=mH528Pdh1Rk
In short, there is a controller setup called "Bidou" for Smash 4 where you map absolutely ridiculous controller inputs.
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For what purpose? Well, you can more, uh, "easily" do what is Smash 4's version of wavedashing, which is called a "perfect pivot." It is effectively the same idea, the only difference is instead of being able to move a substantial distance as you can with wavedashing, you move...maybe a sliver. It also let you do some other stuff, like...running slower than normal. Wow! But I'll explain why that's also stupid in a bit.
People hailed this as the "removal of Smash 4's skill cap," saying it was the future of Smash. It was only a matter of time, they so fanatically said, that a player would take a tournament using Bidou. This supposedly would herald an era of every competitive player using this carpal tunnel-inducing, moon-logic button layout.
And so many players unlearned the intuitive controls that were already ingrained in their memory and decided to use Bidou, destroying their hands and unlearning any form of competency they had gained with the game. Unsurprisingly, the people using Bidou could indeed use many of these difficult techniques, but they were absolutely terrible at everything else because of how unhelpful the control layout is. I had never heard of anybody taking any tournaments using this, but people still persisted...for some reason, insisting that this layout was the future!
Cue the future. In Ultimate, it is confirmed that the techniques which would otherwise require tricky hands or Bidou are actually so braindead-easy to input now that it doesn't actually require any practice. The biggest is the ability to act out of dash for any attack, which effectively replaces the purpose of perfect pivots/wavedashing. As for the other techniques Bidou supposedly helped you do more easily...well...they just weren't difficult techniques to begin with, and simply require skilled hands, skilled hands which take substantially less effort to refine than relearning how to play the game using such a pointless button layout.
Bidou was already a failure backed by deluded buffoons who tortured themselves for little reason. But now Bidou has been rendered completely pointless, making the people who learned the layout for a benefit which was heavily outweighed by the costs waste hours of their lives for a venture which in itself is a fruitless time waster.