Sure, whatever opinion you have about Oracle might be valid, particularly with the way they're handling the JCP and OpenSolaris. Whatever. However, there is an underlying issue that is a bit bigger here, and the blog author is pointing that out in a reasonable fashion. It doesn't matter who is suing and who is sued; copyright infringement is copyright infringement.
You could make the argument that this isn't any of Oracle's business, but they absorbed everything about Sun: their IP, their liabilities, and so on. Sun was perhaps considering this action before Oracle bought them, and we'll never know.
What if the companies were reversed? Would you make the same remarks?