Drawing the line will be the hardest part of writing a theoretical law banning electronics in disposable products. And the line will probably be obsolete a few weeks after the law takes effect. Which is why the line should be continuously drawn by a regulatory body, which in America are being an endangered species.
So they’ll get rebranded as decorative plastic sticks with a bonus temporary vaping feature, and the packaging will say that you must never throw it away, ever.
I really hope you are starting to understand the difficulty in regulating products like this. A lot of people don’t want to do the right thing.
But a disposable vape is very clearly on the side of "should not exist, period".