As he mentioned, it may be overblown unless you're in video. The streaming protocols don't get a lot of love (every 2.x.x version broke different bits of streaming in novel ways) and codecs don't work across devices either.
(Also note other comments here about Color and Netflix apps.)
I don't know how to put this more polite, but if those are the only fragmentation issues he's had on Android, his applications are either fairly simple or they just don't have much users yet.
I don't have an opinion on whether it's worse on iOS (prolly not) or Windows, but it sure is a pain.
Couldn't agree with this more. Once a bunch of people start using your Android app you will get buried under support issues. The company I wrote some apps for will email me all the time saying X device on Y.Z version of Android doesn't work... Most of the time it's just a dead end. Unless I get one of those phones in my hands to test it or if it is spitting out an error code that I know how to fix then there is no easy way to debug the problem. It's frustrating as a developer because I WANT to provide the best experience in my mobile apps but that is a very hard to do as the Android platform seems to be in a constant state of flux with countless new devices hitting stores all the time.
(Also note other comments here about Color and Netflix apps.)