As has been said, the "Rock and Roll" title is what causes all the controversy. Either be more selective, or change the name of the place.
No, it's not what causes "all" the controversy. What causes the controversy in my mind is that one artist gets in while one in the same genre, with similar charting, critical opinion, influence &c. does not. It gives the whole thing the appearance of an exclusive club where one can be blackballed for undefined, subjective, unsupportable reasons which are never articulated. I don't like exclusiveness and elitism; it goes against what I think is good about "rock and roll."