Hat tip once again to Gerald!
Off the Record thinks so!
As for me - well: I love a good rock guitar. I am a big time classic rock and power pop fan. That is, in the secular world! I wouldn't touch these styles in church. At least not in a Catholic church. Truthfully, I wouldn't mind listening to Joe and Mike rock out at a youth meeting. Those guys do quite well. However, they also know and respect the difference between musical qualities useful to a youth meeting in the parish hall and musical qualities useful to Holy Mass.
Now, I did mention quite a while back, probably close to a year ago at this point, that not all guitars are bad at Holy Mass. I can justify a well-picked classical guitar, especially as part of a good ensemble. Well-played, it can sound as good as, let's say, a harp! Incidentally, one of my tenors, Bryce (son of Jude, who is one of my sopranos), is studying classical guitar. But, anyhoo, I would have no problem with a good classical guitar played for, let's say, The Call, which is from the Five Mystical Songs of Ralph Vaughan Williams. The same with some of the works of Alexander Peloquin.
Would I say the same about the folksy strumming a la the Saint Louis Jesuits or the Minnesota Trinity? No. I'll keep it at that so my positive remarks outweigh my negative remarks HA HA HA!