... Citation required. My dad will be writing COBOL till the day he dies, and most of those lines of business logic in Java will bit rot before they get converted to Scala/Haskell/Something else.
I thought you were going to make the more palatable argument that most modern languages refuse to stick to one paradigm. The fact that Java has lambdas now demonstrates the appeal of these other approaches.
Saying that imperative programming will go out of date... Well, that's a bold claim. I vote we meet up in 20 years and whoever is wrong has to buy the other one a beer :)