I dont believe that users got scammed due to downloading fake app directly from App Store. All apps passes tons of moderation before getting into App Store. Despite Google Play Store, which is full of fake and scam apps. It is mentioned that he had downloaded an app from App Store. That is a lie, there is no such app there and never was.
It's true that Apple pays way more attention to security than Google, but you are very wrong if you think that their screening system is infallible.It happened to them before in the past (albeit they pay more attention now) and will occasionally keep happening. Sooner or later fake app will pass all the controls and end up on App Store as scammers tend to be very creative and imaginative. It is always a game of cat and a mouse.
People are so used to mindlessly installing apps, that they do it even if they are going to entrust this app with hundreds of thousands of dollars. They probably don't visit Bitcoin forums and never seen a topic about fake wallet resulting in massive theft, otherwise they'd take at least take some steps to verify the software that they want to use.
Exactly this. Over the years people got used to download apps directly from App Store/Google Play so when they decide to get their first crypto wallet, in 99.99% cases they will do exactly the same thing as many times before. I mean, from their point of view why wouldn't they, in all those years everything worked fine.