Yes, factually incorrect, but utterly true in terms of the politics of that vote. They refused to attack a bill, an approach to the deficit, austerity, the whole fucking thing. They were more worried about positioning themselves as reasonable, tory-lite, neoliberal pragmatists that they ended up unable to attack something as misery inducing as the welfare bill. Being against all that isn't ideological purity - for one thing it's about basic fucking decency. However, for your ongoing delusion of some future leftist coup in the party, you'd rather stay on the side of austerity=death.