That one virus on the App Store was one of, if not the biggest known instance of a virus on the App Store, and your article gives a number four times smaller than half a billion. From your [1]:
> But now, thanks to emails published as part of Apple's trial against Epic Games, we finally know how many iPhone users were impacted: 128 million in total, of which 18 million were in the US.
> "In total, 128M customers have downloaded the 2500+ apps that were affected LTD. Those customers drove 203M downloads of the 2500+ affected apps LTD," Dale Bagwell, who was Apple's manager of iTunes customer experience at the time, wrote in one of the emails.
> Apple also disclosed the apps that included the malicious code, some incredibly popular such as WeChat and the Chinese version of Angry Birds 2.
Still a huge deal, particularly in China, but considering all the virus really did was collect some device info (less information than most ad networks) (and maybe it was able to open URLs and popups on command)[1] and it was the biggest virus on the App Store ever (that I can find), maybe not as awful as you suggest.
The scams on the App Store, yeah that's pretty bad. Though, can you point me at a marketplace as big as the App Store without loads of scams?
[1]: https://www.lookout.com/blog/xcodeghost#what-does-it-do