You must realize that this is a meaningless comparison, since F-droid is barely used and not a target comparable to iOS.
I’m quite sure you are aware of the relative sizes of the stores. If that is a mistaken assumption, please say.
On the other hand, Google's and Amazon's app stores are not open source but built for an open source platform, together have far more users than the Apple App Store and far fewer malware installations. Discovery in the Epic case dug up some documents showing that Apple had no dynamic analysis for App Store apps at all. Google and Amazon both run Android VMs in their datacenters to catch fishy behavior that can't be found via static analysis.
So you compared the absolute numbers, knowing it would be misleading.
> Are you aware that the relative amount of malware is is not merely proportionally less?
You wouldn’t expect them to be merely proportionally less.
You’d expect malware authors to put their efforts where the money is.
> People using an iOS device can never be sure they are installing the secure app they wanted to install or some switcheroo.
This is complete bullshit. Apps are signed by developed and by Apple. Were you not aware of that?
> Google's and Amazon's app stores are not open source but built for an open source platform, together have far more users than the Apple App Store and far fewer malware installations.
Doesn’t seem remotely true - here’s just one recent example:
https://threatpost.com/unpatched-android-app-billion-downloa...
And while we are at it, what’s your source for the half billion malware installs you claim on iOS?