I am basing my advice to moderate expectations just on common sense. I also think while people obviously have a tendency to read a bit of information and automatically assume the worst, the inverse is also true.
Most of us don't have access to the NDA protected blog, so I think it is important to get clarification on what he actually said. If not, you might be making promises to yourself the JPOP never intended. We've already seen an instance where his interpretation of a "Huge Reveal at expo" didn't align at all with the rest of the community's interpretation of that statement. I think it is equally plausible that his interpretation of a "Lebowski style reveal on the rug" might be different from our interpretation of that statement. Unless he explicitly stated that the game would be fully playable, I think it is wise to not expect that, and instead set your expectations to something along the lines of a full artwork reveal, or nearly complete non-operable game (both would be big leaps forward compared to what zidware has historically revealed). If you want JPOP to succeed, I would think this would be incredibly important, because it's much better for him if he exceeds expectations rather than falls short of what people promised themselves based on mis-reading the intention of his words.
It takes a LOT to get a machine fully working.