I mostly agree. Like you already noted, both serve different purposes. One is a game and one is gamifying learning. Even without knowing proper finger placement you will, over time, build up the ability to play songs and have a passable foundation to use the instrument. I’d wager any self taught guitarist will have any number of bad habits or irregular approaches to playing… Regardless of method used.

I think (unsurprisingly) that experience [with it] may be subjective. Gamifying repitition using an instrument is a great way to blow past a lot of the hangups people have initially approaching it. Personally I think it’s a cool concept and found it sufficent to keep me interested and invested. I definitely think it has its flaws but for some it may be good enough.