...and not all "listeners" are "hearers"... certainly nothing wrong with that, but it's a mistake to think that everybody hears everything that is in the music they listen to, even over time...again, nothing wrong with that, and one could easily make the case that the immediate, visceral response to any music is what one keep coming back to over time (eventually), but I'm going to have to respectfully laugh at the notion that "collector" = "listener", much less that "serious collector" = "seriosu listener", at least automatically.
Truth be told, some of the best "hearers" I've ever heard are basically "anti-collectors"! They hear it, get it, and proceed accordingly.