> > "Everyone knew what was in it"
> Prove it.
Prove they didn't.
Oh, is that a stupid reply? Yes it is. You can't prove either thing in a meaningful way but you can look at the situation and draw a reasonably solid conclusion.
1. The basic structure of the law was fleshed out a more than a decade earlier by the Heritage Foundation. It was a well known idea.
2. The basic model was put into effect in Massachusetts years earlier. People knew how it worked in practice.
3. The ACA was discussed for months in congress and even hours on live TV, with all the key players on both sides of the aisle in attendance.
4. For the public there was a easy to comprehend, footnoted summary PDF provided by congress online many months in advance, as well as a nationwide town-hall campaign that completely backfired because of loud-mouthed reactionaries.
5. The people who claim that nobody knows what's in it apparently know more than enough to criticize it.
There was more open public discussion and understanding of the ACA than any other law I can think of in my whole life, and I ain't young. If you want to make the case that some people were willfully ignorant of the contents (i.e. death panels), I'll agree. But that is not the fault of the ACA.