It is.

"Yes, you can write more concise code; yes, you have a more advanced type system; yes, you can pattern match. There are hundreds of other reasons that Scala makes a great language. When a language can offer me constructs to write more correct code, I'll always be willing to deal with the learning curve."

I think the point was that these are the things that he thinks are of more value to developers than the other good things that Scala offers.