Apple likely has a pretty good idea of how many downloads you have, and if users enable "Share with Apple Developers" in settings -> privacy -> analytics, their

Apple likely has a pretty good idea of how many downloads you have, and if users enable "Share with Apple Developers" in settings -> privacy -> analytics, their App Store Connect database definitely has usage and open analytics. Mobile app games likely won't be able to claim "we only made $30k this month on iOS" if they have >1M downloads a month or 100k app opens a day, for example.