Ezra Klein is 100% correct

From his blog:

The bill repealing Don't Ask Don't Tell didn't fail: The Senate did. The bill got 57 votes, not 49. As Dylan Matthews pointed out, a procedural failsafe that's theoretically meant to protect the rights of minorities was just used to restrict the rights of minorities -- which is how it's always been, of course.

Oh, the irony of that sentence...

The diffusion of responsibility that comes from deciding law through complex parliamentary gamesmanship rather than simple majority-rules votes is the problem. What happened today is that a majority of the Senate voted for a bill that the majority of Americans support. The bill did not pass. Neither Harry Reid nor Susan Collins are ultimately responsible for that. The rules of the Senate are.