Interesting that they feel this way. As a Groovy enthusiast, it feels to me like Scala's gotten all the press/mindshare over the last year, while Groovy is potentially doomed to sideline status. Lift gets some praise, and Play! and Roo are the new hotness, while Groovy/Grails doesn't get the love I'd like it to.
Probably all "alt.java" tech will remain somewhat fringe, simply due to inertia. And although I wasn't in the Groovy community at the beginning, I do think that Groovy, in some small part, helped further along the "non Java on the JVM" story, giving people solid examples of using alt.java languages without having to leave the JVM altogether.
Probably all "alt.java" tech will remain somewhat fringe, simply due to inertia. And although I wasn't in the Groovy community at the beginning, I do think that Groovy, in some small part, helped further along the "non Java on the JVM" story, giving people solid examples of using alt.java languages without having to leave the JVM altogether.