This is why the marketing around flatpak bothers me. It’s touted as some kind of “universal Linux package manager” but Linux is just a kernel - all the stuff that apps depend on comes with the distro. So, in order for flatpaks to be “distro independent” they basically have to supply all the stuff that normally comes from the distro - effectively building a second distro on top of your existing one.
Nix and Guix are the same but at least I think they’re more up front that they are effectively distros that can run on top of your existing distro or as a standalone operating system directly on top of Linux.
Apple intentionally makes iPhone-Android interoperability crap in order to sell iPhones. That’s not conspiracy theorizing, Tim Apple blatantly admitted to it.
https://www.theverge.com/2022/9/7/23342243/tim-cook-apple-rcs-imessage-android-iphone-compatibility