I can appreciate the thought of having everything be logically correct, but from what I can see no matter where EZ points to, it always goes to an official download source and/or page.. So it's not as if we're misrepresenting the links in a big way or anything.
It's also not the first time in history that projects have more than one homepage, and choose to keep them active.. If they want to run their sourceforge info and a separate site, we can't really do anything about that.. As long as they aren't complaining that we are linking to something out of date or unofficial I don't think it's that big an issue