You've missed the point. It's not the automatic updates by themselves, it's the manner in which they're built (fast, simple, unobtrusive) combined with the 6 we

You've missed the point. It's not the automatic updates by themselves, it's the manner in which they're built (fast, simple, unobtrusive) combined with the 6 week release cycle. With that pace of development, and a deployment system that works, you have an extremely modern browser with little fragmentation among versions.