I believe they've made the correct choice
As a Product Manager who has desktop and mobile products, the mobile platform market is a quagmire of 1/2 working vs. fully working implementations of the 'Roid OS coupled with older insecure versions of iOS. I've been zeroing in for our next 2 major releases to tighten up like SFDC are doing on the market top trended platforms.
There is a HUGE difference between consumer and business users with many businesses operating MDM tools to keep their supplied mobiles up to date with a relatively rigorous older version retirement scheme. Consumers on the other hand (except Asia) tend to continue to lag chasing the latest shiny new versions.
If you look at https://www.netmarketshare.com/ you'll see that the 'Roid main devices are leveling out on pre 4.4 starting to downturn as are Akamai with their 4Q15 report https://www.akamai.com/uk/en/about/news/press/2016-press/akamai-releases-fourth-quarter-2015-state-of-the-internet-report.jsp the end result is older OSs and browsers must be dropped.
Biting the hand that feeds IT
