Yes, I have noticed the observations in that article as well. However, amongst us "new Calvinists", hymns that are theologically robust are making a comeback. And the people sing them. I hate songs that revolve around "I will..." do such and such. Sing of His majesty! Anecdotal: we still sing "O worship the king" and "Holy holy holy" and such. Some of them have been revised to add and modernized as well by folks like Chris Tomlin. And of course who doesn't love modern hymns by the Getty's such as "O Church Arise" or "The Power of the Cross"?
http://www.youtube.com/watch?v=x63cVewXAeg