Fortnite never had even a hundredth of the smartphone screentime as Tiktok. I honestly think a lot (at least 5 million) Android users will sideload it once it comes to that.

Yeah but what % of them. Cause if it's only 1%, and 99% are going to some other app...

Or DJI. Side loading is so easy, we usually just call it "installing an app" there is no hacking or magic around that, works just like a .exe with some extra protections.