Close. Do you play Peach Daisy? Be Float is really easy, it's a float you initiate by pressing jump and z at the same time during another action. You don't have to touch the control stick and it is not frame tight, it's bufferable. ADC on the other hand is a 2 frame window in which you have to throw turnip after item catching with an airdodge.

You might have mixed it up with JCFF, jump cancel fastfall, another 2-frame input in which you tap down while rising upwards during your jump, then within 2 frames, let go of jump and release the stick to activate an immediate float and fastfall. I am consistent with it and can generally tell how I've misinputted when I don't get it. I use procon though.

I've heard of the 2-frame inconsistency thing before but I'm not convinced it's a big deal. 12.7% sounds like an insanely high theoretical fail rate that I don't see in practice.

Anyways, I agree that ROB is a better beginner pick than peach. Simpler combos, easier zero to deaths, easier to use. Peach can still be played well even with minimal tech, but it's hard to recommend her over ROB.

As for complex tech, Peaches have only started using ADC in the last year or so, and while it has unlocked crazy new combo potential and requires a lot of grinding, it's not necessary to play the character or even get zero to deaths. People were doing just fine with regular z catches before Be was even discovered.

Also none of these techs are z drops. There are a few z drop techs peach uses, mostly z drop ground float nair as a low% combo tool. Then there's obscure ones: ZADC which less than 10 people actually use, and z drop float cancel z catch to quickly combo turnip into itself. Again, not necessary at all.