Art is so hugely varied, just like the other arts...you really can't compare Boyzone to Mahler, and there's something for everybody.
Just like music, more complex works and more complex themes and concepts reward proper investigation. Not everyone can be bothered, which is their prerogative, but it has to be acknowledged that they are missing a lot of the point of the work by not bothering to investigate it, and also, that their subsequent comments are unlikely to be taken seriously by those who have made the effort and therefore understand what it is that they are looking at / listening to.