Art is for anyone. It just isn't for everyone. Still, over the past decade, its audience has hugely grown, and that's irked those outside the art world, who get irritated at things like incomprehensibility or money.

This quote suggests that art is available for everyone to enjoy but not everyone does. The audience for art has expanded a lot over the past ten years, but some people on the outside are not happy about it. They feel frustrated by things like artwork that is hard to understand or when art works appear to be expensive.