Earlier quoted context omitted.
That is flat-out untrue. There are several orders of magnitude more Android users that have been infected with malware than iPhone users. In fact, there have even been Android phones that were compromised within the supply chain and released into the wild. You're either being disingenuous or you're using a very narrow definition of "infected".
Prove it. I showed half a billion infected iOS users. Show me anywhere close to as many infected Google Play users.
Now let's compare that with Android and Google Play. According to Nokia's Security Intelligence lab, 74 percent of malware attacks are on Android devices. In 2017 alone, the largest confirmed Android malware attack was for 40 million users. That's verified installs. (http://www.digitaljournal.com/tech-and-science/technology/no...) If 40 million users were hit off of one app and there are 8.5 million infected installers on the Google Play store (https://www.sophos.com/en-us/medialibrary/PDFs/technical-pap...), it doesn't take a rocket scientist to figure out that you're quickly getting past the 1 billion active malware installs that would double the single incident you cited (which, again, assumed that the worst case happened).
Additionally, you're completely ignoring the fact that the vector for the attack was the developers of those apps themselves who downloaded Xcode from a random site on the internet. They issued an update and the malware was removed. On Android, on the other hand, the only action taken was the removal of those apps from the Google Play store which means that the apps remained installed on all the devices they had infected.
The rarity of attacks on the iOS front alone makes your statements both misleading and disingenuous. Android is also installed on far more phones than iOS is so we're only even dealing with the malware that's been confirmed and discovered. There's likely an order of magnitude more malware installs out there that are silently doing their thing.