system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Democrats/those of the left should not support the PPACA, or 'ObamaCare', since it is not really addressing universal coverage.

Democrats should not be so supportive of the Patient Protection and Affordable Care Act, as it stands today, due to the changes that have been made to the law and given how it has failed to truly address the two main issues that plague the current U.S. healthcare system: rising costs and uninsured. There are also issues with the law that give preferential treatment to insurance companies and other rent-seeking healthcare enterprises.

Originally, the PPACA was to include a government option for insurance, which would have helped give coverage to those who live in states that have failed to set up health insurance exchanges or where the basic plans were to expensive. Insurance companies lobbied against it, and it was removed from the bill. Without the public option, the individual mandate handcuffs citizens into buying excessive/expensive coverage. The public option would have been a step towards universal healthcare coverage for Americans, whereas many Americans still are uninsured today.

The bill also does very little by way of slowing increases in medical care costs. The individual mandate, in the absence of a public insurance option, has helped to raise costs by encouraging non-price competition. As more people have gotten insurance, medical care providers have sought to capture the expanding market by providing unnecessary/excessive care. This leads to medical care cost increases that are not directly borne by the consumer of care, but rather by the insurance companies - who, in turn, raise premiums/co-pays/reduce coverage. The PPACA also gives subsidies and tax breaks to those who cannot afford insurance, which seems great on the surface; however, doing so shifts the burden of costs onto the government and, as such, those who receive help from the government seek more care - and higher quality care - subsequently raising spending. 

There is also the issue of insurance companies and high administrative costs. The United States spends more than most countries, in terms of their GDP, on healthcare administration costs - most of which are going to profits. The PPACA is relatively powerless in its controls on how much insurance companies can charge for coverage. As a result, premiums and co-pays remain high.

Therefore, Democrats/those on the left who seek to implement a true universal coverage system should be pushing for more stringent controls on medical care prices and should be pushing to reintroduce the public option rather than being on the defense when it comes to healthcare and the PPACA.

(Personally, I am for a a Beveridge system such as the one in the United Kingdom, but I try to remain a realist). 

Tl;dr: the PPACA has not turned out the way those on the left intended it to, and as such, has not been addressing the key problems facing the current U.S. system. Democrats should be doing more to change this.
gpt
Of course Democrats should be trying for more, but the political capital on healthcare issues right now is rather spent.

Do you remember how much of a tooth-and-nail battle getting the ACA passed was, and that was when we still had Democratic control. Right now Democrats control neither House nor Senate. And the issue of repealing the ACA has never really diminished from Republican minds.

If Democrats hadn't supported the ACA in its current incarnation, we'd have ended up with nothing. 

You say you try to remain a realist. Being a realist means recognizing that this is a good intermediate step and that Democrats must bide their time until political capital is replenished to address further healthcare issues. 

That may take some time, but that is the nature of progress.