As a guitar substitute, sure, it's an approximation that can't possibly measure up. But as a modernized version of an autoharp, this could be a legit musical instrument.
The fact that it presents itself as a virtual guitar makes it accessible. You see it as a limitation. But limitations are actually great for creativity.
You did, not could. All those things that you said you could do? You literally did them.
You are right, but it is fun.