Dude. The Kittens! That's totally it! Except I was actually way more sympathetic to the Kittens, because as much as they blew it insanely out of proportion, they did have a real issue underneath. Joss killed Tara pretty callously to get a reaction out of Willow with no regard for Tara's own story. And while I'm sure he didn't intend it, it fell into a discriminatory pattern that he really should've been aware of and more sensitive to. (Plus then he watered down the dark Willow arc anyway!)

In contrast, the Martha fans are throwing a bitch fit about nothing. Both the first and last episodes of the season were ALL ABOUT how awesome Martha was, with plenty of episodes in between highlighting her awesomeness. Her entire story arc was "starts out awesome, ends up EVEN MORE AWESOME." The ONLY THING her fans didn't get was their ship, and I think what's really offensive is them bringing up major real life issues and then using them to justify their side in a ship war.