From what I understand this is personal for you and that's got to be frustrating. There's a cohort of people who just like to crusade on the internet and don't actually play games haha. The trick is to seperate your feelings about them from the people they claim to represent.
I wish I could be as sanguine about this as you are, but there have been precedents. Look at the blacklisting of Courtney Campbell or the whole Zak S saga. These things can turn south very quickly.
Mind you, I've been doing some of the things they're talking about with 6e for years. The Always/Often/Usually alignment modifier they used in 3.0 was a godsend. I'm all for expanding things, but let's not be rigid about it, and let's not find insidious intent where there was none.
Story time! You guys get to hear a story from mah campaign! Years ago (almost 30 now, eek!), when during my senior year of college, I started a new campaign with a thoroughly African campaign. I invited a few friends to join, but I also got a response to a 'players wanted' notice I left at the local gaming store. We got together to create the characters, with me explaining the concept of the campaign and the rules on character generation. After a bit of hemming and hawing, the guy who responded to the want ad said "Do you mean we have to play black people?". Well, yes. He didn't come back for the second session. Too bad for him, that one was a lot of fun.
I was very harsh when talking about him at the time. Gawd, what a racist! I suppose now I'd be a little more tolerant. I mean, if you are hoping to play D&D the base assumption is that it is going to be in a fantasy European setting, with swords and armor and catapults and orcs. My campaign probably just wasn't what he was looking for.
(As for the African campaign, it sputtered out because we got too busy. I also didn't have a good foundation of material to run on. It morphed mostly into an Al Qadim campaign, but while it lasted it was a lot of fun)
The Heretic