There was a legal challenge to the ACA already, and it was defeated in court. In other words: your views on the constitutionality of the ACA aren't shared by the current Supreme Court, and therefore they are pretty much irrelevant
You seem to not understand how the Supreme Court works. That's OK, it's arcane.
The particular ACA challenge you refer to was over the Constitutionality of the ACA as a fine. The Court said, "it's not a fine, it's a tax, and FedGov can levy taxes." The challenge was defeated.
Now other lawyers are back before the Court arguing that taxes must originate in the House, per the Constitution, while ACA is a Senate bill (with gut-and-replace not being a valid technique to avoid germaneness via-a-vis the Origination Clause). The Court will rule on that narrow point and then the next challenge will be heard.
SCOTUS will never come out and say, "All aspects of ACA are Constitutional".