I disagree with you here. Every good abstract/expressionist/whatever artist is very talented. Otherwise anyone could do it, and believe me they can't. Although I am slightly biased as my art has mainly centered around expressionism and colourism and my art teacher was taught by Hodgkin.
I tend too agree ,on a recent visit to the Tate Modern I viewed one of the exhibits which was several packing crates built in a square with 2 photo's stuck too it, one a photo of a cottage and teh other a bus if I remember correctly...is that as worthy as the Dali or the Picasso upstairs ? In my eyes no way..Im not saying every "abstract/expressionist/whatever artist" is untalented, it's just it does bug me when you have someone who has literally just thrown some paint on a canvas and then expect people to think they are as talented as the guys and gals that put hours and hours into a single piece.
In essence, the art is about explaining the reason for the art.All Art is based on a reason for it being created. For example, Emotions / Irony.