The absolute truth is this: If the ACA is bad policy then it would be proven just by going into effect. For example, people would get unhealthier, more people would get sick and not get treated, people would drown under the burden of medical expenses and debt, the deficit would balloon, and people would drop out of exchanges and protest government.
But this isn't true. If fully implemented, the American people will benefit and realize that the democrats were right. This is what republicans fear which is why they are trying to fuck up implementation as much as possible. If the ACA succeeds the republican party loses. And if implemented fully, the ACA will succeed. Despite all the compromises, and not being ideal, the ACA is still sound policy.