I’m not defending this law, just discussing the wording.

First, either this law, or another already on the books, or established case law, defines what an app store is. Sovereign citizens get hung up on legal wordplay because they mistake legal jargon for English. It’s not, any more than I move a small furry mammal (mouse) to click religious imagery (icons) on my desktop (not a desktop).

But second, if you really want to wordsmith it, “store” can mean “place where you keep stuff”, not only “place to buy things from”, as in in short for storage. Where do you save work documents? A file store. That’s not where you buy docs, but where you keep them. A crafty DA could probably say, lacking a definition otherwise, that an app store is where you store apps, and buying them is incidental. And they’d probably win over you and me arguing otherwise, because they can speak legal to the judge and we can’t.