https://www.apple.com/privacy/docs/Building_a_Trusted_Ecosys...
Of course the document never mentioned that iOS has a bunch of malware on its own and the appstore doesn't seem to help any of that.
You could add [citations needed] to pretty much every paragraph.
It is obvious how sideloading could directly lead to an increase in malware.
It is obvious that the iOS/Android appstores help keep down malware.
I am sure there are arguments that can be made to support your view. But these are not those.
Hiding malware from an appstore reviewer is trivial if you really want to.
Most importantly, the idea that the App Store in its current form is exempt of malware and the best possible security is completely ludicrous.
After the USB C debacle, the EU has learned to include such a clause pretty well, I guess.
So besides writing a snarky disdainful press release they made sure no one significant ever will use the scheme required by the EU because you'd need to pay through the nose for it.