Gonna go with no. Partly because the "problems" with ME3 are up for debate, and I don't happen to think it is as flawed as the poll seems to presuppose, and partly because any problems it does have can be placed on the game itself, not what came previously.
The development of each game was separate from the others. Sure, they had a lot of the same people on each one, but every game had its own team with different talent and different goals and different budgets. Whatever ME1 did placed no direct demands on ME2, and whatever ME2 did made no direct demands on ME3.
ME2 is a bit of a sidetrack from the "main plot" of the reaper invasion, but you can't say it did nothing to advance it. It told us the ultimate fate of the protheans. It gave a lot more insight into what the reapers want, i.e., their reproduction cycle. It introduced a leader for the reapers (it's certainly not ME2's fault that ME3 completely neglected Harbinger). And it expanded the universe of Mass Effect so, so much, making sure that the final game didn't have to do that itself because you are already informed and invested in the galaxy and its people.
As far as the Crucible goes...It's a tricky subject. I never wanted there to be a reaper-killing MacGuffin, I think most people are disappointed that the game immediately forced us to rely on some sudden discovery that promised to be our total salvation. But really, was there any other way to structure the game?
MacGuffins are not an inherently bad plot device. In this case, it gave us something to work toward. Think about it. In ME1, the Conduit was the MacGuffin. It was a mysterious object that we knew little about other than that we must find it before the bad guys do. It lead us in all our decisions; what gets us closer to the Conduit? What can we do to keep Saren from finding it? In ME2, it's less clear-cut, but the Omega 4 relay was pretty much MacGuffin-like. We know that the collectors are bad, they likely work for the reapers, and we have to find some object or learn some technique to get us to their homeworld in order to stop them. It was more organically woven into the plot, but really, the reaper IFF was the MacGuffin.
So, along comes ME3 and introduces its own MacGuffin at the beginning, and many of us, me included, are disappointed. But really, it's the only thing that makes sense. Without the Crucible or something similar to work towards, the game is essentially aimless. "Stop the reapers" is a weak central pillar around which to structure the plot. We know the reapers are a galaxy-devouring force, and even with the ultimate goal of stopping them before they kill everyone, without some vehicle to make the impossible happen the plot flails around without any specific thing for Shepard to do aside from prop up the walls as they fall in on everyone.
I do think that the Crucible could have been used better in the overall arc of the plot and gameplay, but its existence is, as much as I don't want to hear it myself, pretty necessary.