Not "shatters", as while it is a valid counter, it doesn't tell you the relative strengths and weaknesses of the two approaches, only that Apple isn't perfect which should already have been assumed.

A stronger counter to Apple's argument is the relative pricing of exploits… but the story I'm remembering is old enough that I don't want to just assume it's still true, even though it's near the top of my search results:

https://www.wired.com/story/android-zero-day-more-than-ios-z...