I got my first smartphone years and years ago, and it was an android. Then they came out with the iPhone 3GS, and I briefly had that. Didn't like it, traded for an Android. Was ready to experiment back then, even briefly ran Windows Phone flashed on a HTC device. But inertia had its way with me, and I've been sticking with Android ever since. I have all the apps I need. I have my ages-old "weird" workflows set up, like keepass synced through OneDrive. I run an andblocker on firefox. Moving to an iPhone would be just so much pain for no real gain.
If you don't provide an Android app, well, provide me with a burner iPhone if you want me to use your service.
What happens when your general approach (ignore the margins) means the "bona fide charitable causes" can't operate because they all require top-of-the-line equipment to even be functional?
Software is already shite, stop trying to justify making it more shite.