No I am not. If the focus of this quote was OS updates or security updates, I would have responded in kind:
"Problem with Samsung is once they have sold you there phone it's only supported with major updates for at max 2 versions. Until they can get release out quicker and for longer there is no chance I'd go back" -vmistery
vmistery's subsequent reply explained his concern for security updates. Afaik, precognition exists only as plot device in fiction.
But since you brought it up directly, I will address that point directly. Security updates do not require an update to Android in the way that I
think you mean it. It doesn't take a migration from M to N to get security updates. I know this because my S5 received several security updates on L before it was updated to M and at least 1 after.
The delay in getting the latest and greatest OS? There's no denying it needs improvement. If there was one mass distro and everyone got the same thing, hey that would be cool. Cool, not practical. iOS is static across the entire ecosystem. That makes for an easy update. Android is not static, far from it actually. The variety and variances in the different offshoots makes mass distro impractical. Some understand that. Bigger secret that's not so secret? Most don't care. Same with iOS. Ask the average person what version of iOS they're running and you'll most likely get a sideways look and a surreptitious reach for the pepper spray.