This thread is an exercise in the blowback effect. That is, when presented with facts, not only will the opposing party not give such things credence, but they will actually settle further into their beliefs that their view trumps the provided information.
It's also an exercise in fallacies and poor thinking. Fallacies such as Sports Hernia's constant references to 'worshippers' which is a poisoning the well fallacy - to the tacit belief that because a lot of people believe Bevell should be fired, that's the factual reality. This being the appeal to popular opinion fallacy. As for sloppy thinking, people take their singular, individual criticisms as more important than the overarching trend. To explain what I mean, let me draw an example from physics. If you were to look at each molecule or atom in a moving fluid (wind, say), you would find that it's actually a hodgepodge of the constituent parts traveling in many different directions. However, we notice the wind traveling west, for instance, because of the collective average of its constituent 'elements'. The individual becomes washed out by the larger whole - which is the more important trend when studied. Complaints, then, about 'empty and sets' and 'bubble screens' are those small bits which are being given undue importance against the facts presented at the beginning of this thread. Yes, we'd like to get rid of the imperfections to make everything more smooth, but at the same time, as even a hundred water molecules do not impede the flow of our aforementioned wind, the criticisms against Bevell obviously do not negate or override the fact that he has been an important piece in creating a top 10 offense and a top 5 offense by DVOA. For more than 1 year at this point - which means we have a good statistical sample at this point. No one can say this year was a simple outlier.
Eventually, though, I don't even care much anymore. It's not worth arguing about if you're in the "Bevell is fine" camp, because the reality of it is: the "Fire Bevell" crowd is only hurting their own enjoyment as they look for reasons to constantly complain. The reason they don't enjoy Bevell is that they dislike him, they are looking for justification of their dislike in whatever way possible, and are feeding a vicious cycle which is stripping away the enjoyment they could have had. This is the best time Seahawks fans have ever had; I'd rather just enjoy it as if it were and not as if I am angry because I want a Ferrari but all I have is a Ford F-150.