There's still a lot of entropy involved in forcing a new update, such as laptops possibly not supporting the new minimum macOS for Xcode, various frameworks which may have been deprecated, etc.

And when it comes to games? The game engines are big issues, which is why most games are just made and left to gather dust, because updating them can be a real herculean effort.

And asking people to take the effort without stating a reason? That's pretty harsh. At the very least make a public statement about it, and make it apply to everyone, so everyone's aware of what their time/money investment will amount to when making an app.