...He said, while lobbying to prevent my game from ever existing.
Look, you advocate for the game you want. That's fine. It may not be the game I want. That's fine too. And if you think 5E will split the 4E market and make your life worse, feel free to agitate for 4E to continue forever. I don't agree with you, but there are lots of folks I don't agree with about lots of things.
What I find offensive is the claim that "players who dislike Fourth Edition should stick with the myriad other D&D systems already published rather than wish that Fourth Edition be replaced by something that already exists elsewhere." I will wish for what I want, thank you very freakin' much, and I will do so publicly and loudly. And if what I want existed elsewhere, I'd be playing it.
What everybody should do is speak up for what they want. If it turns out that there's a big community of 4E players who want their game to remain current, and only a handful of malcontents wanting 5E, okay; 4E stays. But if it turns out most players are making do with their current game and would really like to see 5E, and only a handful of holdouts want 4E to stick around, 4E goes*, and that's how it should be.
[size=-2]*Except it's not even that, because 4E will still be around, just like 3E, and 2E, and 1E, and OD&D with the Chainmail combat rules. It just won't be the current edition supported by WotC any more. Quelle horreur.[/size]