What is it they say about opinions and some holes?
Since everybody's got 'em, here's mine.
AV's post had one sentence that I think could come off as a bit preachy, which was the "But if you jump..." sentence.
However, I'm pretty sure it wasn't meant that way, and probably wasn't even directed at any particular individual, but was instead a general statement.
DK, I don't think your original post was particularly rose-colored, other than the comment about this rumor beind ONE of the reasons for you to stay in car 2 (which, by the way, we all know is a classic case of denial

)
That comment is probably what precipitated the "But if you jump..." sentence. Sounds like an even trade of general statements that may or may not be directed at any individual or car, and both should probably be cut some slack especially given the imperfections of this medium. Certainly I don't think anyone really was trying to offend anyone else.
So, hopefully, NOBODY feels the need to take anything more than a temporary break from our discussions.
As for the original topic...
I have no idea. I can only speculate. I'd like to think Disney knows they can't let MGM go largely untouched for another 5 years or so. Further, as I said, while spending is most certainly decreasing, its still possible that the exisiting parks could get more investment than in recent years due to the construction of new parks sucking up less than in the recent past.
So its possible that decreased spending and this 'additional' MGM attraction might not be mutually exclusive. Based on Scoop's post, it seems pretty clear something is at least under consideration (note, he said WDW, not MGM, so that leaves a lot of possibilities open), but as AV also points out, that doesn't necessarily mean it will move ahead.
Another thing to consider is that Epcot is still sitting there in need of something more than M:S, no matter how good M:S turns out to be. While MGM shouldn't be ignored for the next 5 years, Epcot can't be ignored either.
Then there's DCA, and rumors of DL getting another E-ticket in 3-4 years... There's a lot of hands fighting for the shrinking pool of park investment dollars.