I agree with this. I am about as much as fan of instrumentals as I am acapella vocals. Both require each other to make a complete song.Nah. Vocals and the vocalist are the key for me whether that be the prog-rock, ska, punk rock, or 60s music, I enjoy listening to.
I don't listen to much folk and blues because there's too much playing and not enough vocals. Find it all a bit instrumentally, over-indulgent to be honest.