0: https://en.wikipedia.org/wiki/Affordable_Care_Act#Insurance_...
That's...misleading. Sure, the broad outline of a policy like the ACA first emerged as a joint Republican/insurance industry idea for national reform after the failure of the Clinton healthcare plan when it looked like there might still be enough demand for some national reform that they could use a strategy, and yes something broadly similar was pushed successfully by Republican Governor Romney at the state level (in Massachusetts, not Utah.) But even the national Republican party had moved right since then, under Bush, they had toyed with mandatory purchase of specifically HDHP/HSA plans, rather than traditional insurance, before deciding that health reform wasn't something that even needed to be on the agenda at all.)
As far as window dressing goes, we see this from both parties. They talk and vote radical when they are out of power. When they are in power, everything is status quo.
The ACA is incredibly complex, widely variable in implementation, and didn't actually help healthcare costs. Repealing Don't Ask was a symbolic step. Actual change in LGBT rights came from the Supreme Court. The Paris Agreement is the ultimate window dressing; it allows every country involved to point to it and say they're taking action on climate change, without requiring literally any changes.
These are all classic Democratic Party moves. They take on the appearance of doing something while kicking the issue down the road a few years for someone else to deal with.