It seemed like most of his slides came down to the old typed/untyped flame war. Yes, in Scala you can look at your objects in an IDE and be told what type they are, in Ruby you can't. Some organizations and people need that, some don't. And yes, it's easier to optimize typed languages. Some applications need that extra speed, most don't.
I'm happy he found a language he enjoys working with, but I doubt this will change anyone's mind...
I'm happy he found a language he enjoys working with, but I doubt this will change anyone's mind...