Re: It's not a boat.
From the description, I don't think it should even be called a failure, let alone a "back to the drawing board" as said in the article (get rid of that, totally unfair). It sounds to me like everything went perfectly until the landing burn ended, at which point the stage (having nothing solid to stand on), tipped over.
If it blew up when doing a belly flop on the water, that's a shame, but it doesn't say anything about the viability of doing the same thing on land. Hopefully there's video, the space-x stuff is always great viewing.