I may have given up on the potential for single-payer to work by that time, but I did support it at one point because it provides the best leverage on a theoretical basis among other more broad benefits. At the time I did not recognize that the health care system was being broken on purpose for nefarious reasons and by those who wanted universal care to further ratchet up their game. ....
Most people still don't get it.
Curiously, I think that single payer could work best, but only if the government was stronger than those taking the payouts under the system.
In the USA the opposite is true, leading to an inescapable conclusion that single payer would allow the worst corruption and bilking of the public.
My current position is that even if one finds a government who could and would 'do right' for the people in a situation like this, there is no reason to believe that it would persist in this disposition and much history and logic to indicate it would not. It's a tough pill for a former 'socialist' like moi. I flip-flopped...but I understand how people could hold what I currently consider to be wrong-headed views.