First, Scott Aaronson never said D-Wave sucked, to my knowledge. I downvoted you for that exhibition of rhetoric, it was pretty immature even for my standards.

Second, compare quantum computing with fussion, which is of about the same level of difficulty. Some physicist thought he had cold fussion, and the response from the community was (rightfully!) to be skeptical. But even if it would have worked, no one would whine about how Evil Physicists were Keeping Cold Fussion Down. Instead, it would be understood as the appropiate reaction to very wild claims, and large scale entanglement is pretty out there.