The title of the article is politically biased. Amazon did not patent shooting a subject in front of a white background. They also never patented buying something with just one click.
The problem is, that the political agenda against patents (and the people who oppose them, it seems) don't care whether the patents are on something innovative or not.
For instance, I participated in some work that resulted in a patent of a solution for some very difficult problems in MMOs. The outraged headline was "Company patents playing games online!"
When all of the opposition against patents comes form people misrepresenting patents, it's hard to see it as anything other than sour grapes that certain companies are more innovative than others. (the recent anti-patent movement is coincident with a specific innovation.)