Nobody is saying that Bezos will be a steward of good journalism (I can't see him doing much worse as the head of a major news medium than Rupert Murdoch, though) and has reasons to buy the paper that go beyond, ultimately, making more money.
But from a technology enthusiast standpoint, it can't be denied that the guy has a amazing track record of innovating the sectors he has been involved in, and personally I'm curious to see how he will tackle this one.
The main takeaway from the story, in my opinion, is seeing a steady trend of the "new" technology companies trying to get in a position of influence, like Facebook interested in getting into politics, Google having already plenty of lobbying/funding activities, and now Amazon getting its own paper...