I'd say those "who really care about music" take the effort to learn how to perform it. As a recording engineer I got to know a lot of "Classical" musicians—most of the musicians specialized in "Early Music", Baroque and earlier, some were performing 20th century music, sometimes inaccessible stuff. These people tended to be eclectic in their music tastes, a bit more open minded than one would expect. One medieval musician (a bit of an audiophile) gets ideas from Dead Can Dance. I only play a little—I/IV/V stuff, mostly—but I think that real engagement involves at least a bit of musical performance.