I think I agree with that post 100%.
(Another hack guitar player, who on many occasions accompanies soloists and such in church)
One of the things that really hurt contemporary Christian music (I'm showing my age with the CCM acronym) in the 80s was the demand that every "Christian" band be, first and foremost, ministers of the Word in the same sense that a pastor is a minister. In essence, the demand was that Christian bands had to be preachers first, musicians second. Anybody remember when Amy Grant did that song with Peter Cetera? You'd have thought she joined a deathmetal band from the outcry.
Nowadays, I think folks are starting to realize that a band can be Christian and not necessarily have every song about their faith. I write *tons* of songs, three of which are on my profile page (insert shameless self-plug here) and none are overtly Christian. However, if you were to listen to all my music, you'll find it's written from an undeniably Christian perspective.
It all depends on what you are actually looking for in your music.