That's not true. The ACA provides quite a few health care reforms. Particularly in standardizing the reporting of outcomes, which is critical in analyzing what works and therefor should be paid for and what doesn't work, and therefor should not be paid for as well as the universal mandate, permitting parents to carry adult children on their policies, ending exceptions for pre-existing conditions, creating insurance exchanges, etc. These are very real reforms. So to say that the ACA is not health care reform is grossly inaccurate. Does the ACA reform all that will required to be reformed? Of course it doesn't.
You have to be careful to not throw the baby out with the bathwater cause you didn't get all that you wanted in this legislation the first go around. The most important aspect of the ACA is that it creates a legal precedent from which other health care reforms will be legislated in the future.
Most Americans realize this and that is why most Americans oppose the repeal of the ACA.