|At some point you clearly care more about coming off as more superior on tolerance than others (probably something to do with propping up your ego) than basing something on talent alone.|
You can get your panties in a bunch if you like, but you're still just wrong on the facts. You can't make the timeline of a supposed "dip" in quality fit to match the cast progression of that decade, and you completely discredit your argument by asserting that the writing went downhill under Tina's reign a head writer and improved when Seth took over. The complete opposite is widely acknowledged to be true. Seth a better head writer than multiple-Emmy winning, Twain award-recipient, bestselling author Tina Fey? Your bias is showing.
What was said on that doco, as I recall, is that some of the cast talked about not being sure of how to fill the void when Will Ferrell left. Well, Will left in 2002, which is hardly the mid-2000's, and his absence was quickly ameliorated by the advent of Fred Armisen and Will Forte, plus Amy powering into her prime. So the cast didn't think there was a dip. Why would they? That was the height of the Grrrl Power SNL period.