While I'm inclined to agree on the general point that some of the replies on bugzilla aren't the most tactful or effective way to get a point across, I don't think it has a whole lot to do with Apple helping Wine or not. I know that at CodeWeavers we've filed a fair amount of bugs in the Apple bug tracker, often with detailed descriptions and test cases to reproduce them. Most of the time those just get (very politely, true) ignored. My impression is that the reasons are mostly political, but that's of course something that's hard to substantiate.