Think he had his own 'burning platform' moment?

( i joke )

He doesn't need to explain why he left. Consider if when you changed jobs if you would like to explain to a bunch of internet voices all the reasons you left the old place. Did you see how poorly some commenters took just the tablet delays? No info would ever be enough.

Whether there was turmoil or not, getting in-depth reasons is likely not gonna happen nor should we expect it. His contributions are appreciated, and move forward.