I assume you're aware that many "smart" devices these days have a full blown OS, a web browser, and an app store. But then some are missing or have only partial functionality here or there. If the law doesn't unambiguously specify what it applies to it puts anyone in the grey area in a difficult position.
While we're at it, does fdroid count as the sort of app store that this law cares about? Because an end user can install that for themselves.
I expect a smart toaster could have a legally-compliant rump Toaster App Store which simply echo “I am a toaster” regardless of user age policy.
F-Droid is more abusable, unfortunately.