Whoa ! Anyway back to the original question, LOL.
Check out any GL concert and you will find many people just there on a lark, or because they "remember" him or a dozen other reasons. Most in attendance do not boast the number of shows that many here at corfid have attended. Most don't know his kid posts on youtube. Most don't even know the darn band members names.
BUT they buy tickets and they must be entertained, economics 101. The percentage of us in the audience waiting for certain chord changes, writing down what he wore for the second set, writing down set lists to post here, and going backstage to see him for the umpteenth time, is fairly small. The percentage of us to them, that is.
Fan is short for fanatics and that's us, LOL.
Bill