All true, but I am still waiting to hear why they would say the game is in the polish stage if it's not. If they are planning to delay the game again, which there is absolutely no evidence of whatsoever, then they are only setting themselves up for more grief down the road. This whole business with assuming that everything they say is a lie just because...I don't find it very compelling at all.
I would ask that if, as you admit, there is "no evidence of whatsoever" why even suggest that they are setting themselves up for anything. Looks to me like it more like you're setting yourself up for "something" by speculating in directions for which you have "no evidence of whatsoever."
One of my many unpopular opinions here is that entirely too much effort goes into engaging in wild speculations here on BSN... and then trying to build equally wild and speculative accusations based on those wild speculations. People claim all the pessimism is so that they don't wind up disappointed... but I really think they are setting themselves up to be disappointed if and when the "doom" they are speculating about doesn't happen. Their greatest fear is that, Heaven forbid, Bioware just might survive after all. 
As for pessimists and realists - Well, Ashley is say that a "pessimist is what an optimist calls a realist" However, her speculation that Wrex and Vakarian would misuse their free access to the ship that Shepard gave them, didn't have any "substance" to it, did it? In other words, neither Garrus, Wrex, nor Tali sabotaged the ship in any way or passed on secret information about the Normandy to their respective governments. In fact, the "leak" was human and used by the human-centric Cerberus organization to build the SR-2. So, from that perspective, I would say that Ashley's opinion about pessimism was pretty irrelevant and her speculation/accusations were as unfounded as saying Bioware is "pointlessly lying" about a delay that hasn't happened yet.