The point here being that whether or not a universal health care system fails in MD is irrelevant in the bigger picture of things. Just keep trying at the state level until it reaches the federal level.
But all those instances you gave were either repealed outright, rejected by voters or ruled unconstitutional. I'm talking about a system that goes live, stays operational and then proceeds to implode spectacularly, and maybe even leaving the state's finances in a catastrophic situation. If there is a plan out there that can avoid all that by more than just luck without raising taxes so much that voters themselves prevent it from going live, then I'd like to see it, but as it stands now the idea if expensive and it would require repurposing Medicaid dollars I think. And it's not just about keeping it viable in the eyes of conservative voters on the fence with it, it's about keeping i viable in the eyes of Democratic politicians, who are easily spooked as it is. Another issue that state-level plans make me wonder about is people migrating to that state just for free healthcare, which could be a long-term issue if no other states do it. I don't think it's constitutional to ban interlopers from taking advantage of that system.
Also pre-1930s judicial rejection of Social Security seems like a nice preview of a conservative future: conservative judges reject everything big / notable the left wants to do, making up legalese to justify it as they go.
My point was only that any social movement in America takes an ungodly amount of time to reach the federal level and faces a ton of roadblocks along the way. A state separately setting up its own Universal Health care system would not be so bad even if it failed because throughout American history, most legislation like the 8 hour workday, overtime, workers comp, the minimum wage, started at the state level and took decades to reach the federal level.
In Canada for example, Alberta passed a bill in 1935 creating a provincial insurance program, but the plan was scrapped due to the majority party losing and because of the great depression. In 1936, a health insurance bill passed in British Columbia, but it too was scrapped due to objections from doctors.
Saskatchewan passed universal health care in 1947 but the province was too broke to pay for it. In 1950, Alberta passed a health care plan that covered 90% of the population (a bit like Obamacare in that regard). It wasnt until 1957 that federal implementation happened in Canada and it took until 1961 for all provinces to participate. The program was further expanded in 1966.