I remember a story from Burma/Myanmar when it was a full-on military dictatorship. An American financial journalist went to the doctor in Rangoon, and the doctor didn't understand why he was fishing for a recipe. If you want to buy medicine, just go to a pharmacy! No recipe required. In other words, under an repressive regime he was free to take care of his body as an adult in a way he wasn't used to in Western countries.
So you can find freedom in unexpected places. I don't think the regime had any intention to be libertarian. The health of its citizens probably wasn't a priority. And I think your medical freedom of choice stops at ruining herd immunity and infecting kids or people who can't be vaccinated for medical reasons.
Interesting stuff about Myanmar! It is strange, the places where freedom is found.
I have written extensively on the myth of vaccine-induced herd immunity. You can check out my posts on the topic here, here, and here. My freedom to protrect my child from harm as I see fit as a parent is not dictated by others.
Burma/Myanmar is very much rooted in Buddhism which is purely based on personal growth, self-help, Being the master of your own life and absolutely not relying on any outside help for salvation. Buddhism is practically the anti-religion when compared to Christianity of Islam. Half of Japan is also Buddhist and those cultural roots gives the country a serious edge. If you take some time to watch some anime you'll find so many things that would be completely unacceptable in Hollywood but isn't a big deal in Japan.