Yeah, I wouldn't call it an "easy" fix. It's a system-level toggle and IIRC, since Win10 is in no way tied to your dev center account. I believe in Win8/8.1 you had to sign in to create a local signing cert, but that seems to have been removed in Win10 since I switched to developer mode with no real changes other than a radio button choice.
Plus, it'd be very hard to accurately determine "correct" usage. You don't have to have a dev center account to develop for Windows. You just need it to distribute your apps. I've made plenty of apps without distributing them and haven't needed to touch dev center. I do believe you need VS to create the apps, but only because the tooling is only available there. There's nothing technically limiting that, though, and simply having VS installed does not indicate you are developing Windows apps. You could be writing Python, for example, or even writing stuff for Arduino using 3rd party extensions.
Plus, it'd be very hard to accurately determine "correct" usage. You don't have to have a dev center account to develop for Windows. You just need it to distribute your apps. I've made plenty of apps without distributing them and haven't needed to touch dev center. I do believe you need VS to create the apps, but only because the tooling is only available there. There's nothing technically limiting that, though, and simply having VS installed does not indicate you are developing Windows apps. You could be writing Python, for example, or even writing stuff for Arduino using 3rd party extensions.