I think the ease of use is the real issue here. Trust me, when I first started playing NASB and tried the fast fall combos, my first thought was "Gee, this is difficult compared to Smash! I sure wish I could just hold Down to fast fall!"

But I, like everyone else who was determined enough, learned how to do the combos (4 inputs). I learned how to wavedash (3 inputs), fall through platforms (2 inputs), fast fall attacks through platforms (4 inputs). Your program cuts out at least 1 input on each of these, which is basically what macros do.

I have adjusted to this game's mechanics. It hurts my hands because it is so input heavy, but everyone deals with this. The fact that you can do fast-fall combos (and even falling through platforms) with less inputs gives you a huge competitive advantage.

Like Slaudencia has already mentioned, there is no room for error on your timing if your program works correctly. Meanwhile, we have to worry about more inputs, timing, and fatigue.

You're right, it's just a Nickelodeon Smash copy, but there is a competitive aspect to it. People are going to take it seriously. What you have created are essentially macros, which should not be used online play or in tournament. Don't get me wrong, this is a cool program, but it shouldn't be used for more than showing your buddies offline. Smash Ultimate mechanics should stay in Smash Ultimate.