What is Steinbeck’s point of view about national parks?

From the text:

I must confess to a laxness in the matter of National Parks. I haven't visited many of them. Perhaps this is because they enclose the unique, the spectacular, the astounding--the greatest waterfall, the deepest canyon, the highest cliff, the most stupendous works of man or nature. And I would rather see a good Brady photograph than Mount Rushmore. For it is my opinion that we enclose and celebrate the freaks of our nation and of our civilization. Yellowstone National Park is no more representative of America than is Disneyland.