Their tendency to blame everybody else for the show's failure rings hollow.
They have actually frequently said that ENT wasn't perfect. But this wasn't enough, B&B bashers want to hear a mea maximum culpa. And even that wouldn't have been enough, it would have rather reenforced than soothed the bashing.
I do for example not like the creative work of Orci. I think he is an abysmally bad writer. But I would never expect the guy to apologize for anything just because I don't like his work. Personal preferences about a television or movie show aren't facts.