It's as if touch device trivializes how much aim is required in jump maps while rake tapping doesn't trivialize the fact You're still trying to combo 300+bpm fucking streams. The number of maps where it helps is irrelevant.
"But what about full screen 1/8--"
No. Using one finger on each hand to rapid-tap opposite ends of the screen is trivializing specifically because it outright eliminates the need to aim at each circle with a mouse or tablet; that's why it needed to be nerfed to the ground. Learning how to synchronize multiple fingers on just one hand to be able to keep up with what the map demands a la rake tapping is not. You still have to aim, you still have to combo, and you still have to be on time, but rake tapping makes the last two easier to do. That's not trivializing. It would be trivializing if it removed the need to do any one of those three things, and especially if it removed two or all three. Nobody has proven that it removes those things because it can't.
"But muh speed--"
Is the whole reason rake tapping exists. Again, YOU are enforcing that the only way to improve on streaming at high bpm is to getting rapid triggers at .2-3mm actuation and that players train to consistently meet that actuation on both press and un-press because that extreme is where things will need to head if we stick to just two-finger play. And to be fair, even with rake tapping we'll probably still have to if someone tries to pull out, like, 400+bpm streams, but until then rake tapping makes it easier in a good and healthy way.
Oh, also, you can alternate mouse/keyboard inputs, which is essentially what you do in rake tapping, too. You shouldn't be overlapping in the first place, regardless of what method you use, so that's a stupid argument.
edit: Also, again, once people have time to refine the technique, it will be played with rhythm and proper accuracy. And once players have reason to believe it will help, then they'll be incentivized to refine it. So long as idiots like you aren't trying to be stupid in calling it bad when it isn't, anyways. It's like someone showing you a way to turn plastic into useful and eco-friendly products, but you shoo them away purely because it isn't efficient (yet) and you want your way to be on top. No shit it's not efficient yet because it's still basically in the proof-of-concept phase where the best that's been achieved is showing it's possible.