[JCTheDenthog]

>everything gets a warning until the app has some minimum count of installs

Unless the devs sign their app

[jxmesth]

So then the question is, why haven't they?

[JCTheDenthog]

Because it's a huge pain in the ass to get set up (and requires paying Microsoft and providing them with all sorts of personal information). After initial setup it's not too bad, we have a few signed apps at my current employer.