I agree that Java to Node is not a magic solution. Clearly, like posters below have mention, it's the old architecture/stack that's the problem. J2EE containers have come a long way now, I can restart my Tomcat/Jetty containers in a flash, unlike Weblogic/Websphere of the days past (shudder).
I mean, I still think Java and the JVM are great for many many a use case, not trying to pine for node here.