Democrats had a clean sweep of statewide races in California and almost have a 3 to 1 super-duper-majority in the state legislature. Politics has evolved rapidly on health care, from “universal health care” being the outlier position, to being the default position of much of the base.
Yes, I do support Medicare-for-All and single-payer. However, it will likely take a Democratic President, and progressive supermajority in both houses of Congress to pass. Someday, but obviously with Trump/Pence in the White House and Republicans controlling the Senate, that day politically is not today.
Single-payer is not the only possible pathway to “universal health care”. The obstacle to enacting single-payer now from a policy perspective is cost. It is unlikely that the financing would be achievable without a large number of federal waivers I would not expect the California-hostile Trump/Pence administration to give.
Here is an article written by Gabriel Thompson on this issue from Capital & Main that I found interesting: WAITING FOR GAVIN – Great Expectations: California’s First Steps Toward Universal Health Care