Somewhat off-topic but why oh why do nearly all app developers who have things on both Android as well as iOS insist on using an iPhone to show their app and al

Somewhat off-topic but why oh why do nearly all app developers who have things on both Android as well as iOS insist on using an iPhone to show their app and also insist on saying the app is available 'on iOS and Android' instead of ordering these alphabetically? Does Apple give some incentive to do so or some punishment if it is done the other way around? This is a free app on both Android as well as iOS, it targets those who know what OSM is and as such feels like more of a fit for those running AOSP-derived distributions than closed-source walled-garden iOS yet still they advertise Apple-first. I realise that Apple is bigger than Android in the USA but the world is so much bigger than the USA and Android is so much bigger than Apple in most other locations. Android devices also offer more opportunities to show off the product with their bigger screens and less prominent or absent notches, so much so that seeing the Android version next to the iOS one - they show one Android device on the bottom of the screen, hidden behind an iPhone - makes the iOS version seem rather cramped and cluttered. I can understand this when they're specifically advertising to the paying iOS crowd but it just seems out of place elsewhere.