Sure, there were a number of different subsidized-private-insurance schemes over the years (including the one briefly rhetorically embraced by George W. Bush but, again, that never went far legislatively) that differed from the ACA model in that only HDHP/HSA plans would be subsdized.

> so it's misleading to suggest that supporting one and not the other would be hypocritical

I wasn't suggesting that, I was illustrating that the perceived problem and many elements of the potential solution space have been part of the national dialogue for a long time.