> The analog in healthcare is targeted subsidies for poor people that cannot afford care

Food subsidies aren't targeted at the poor. The US government spends many billions of dollars subsidizing corn and soybeans and other crops that lower food prices for huge portions of America.

“Access” in this context is just a weasel-word cooked up by hospitals and insurance companies to protect their bottom lines. Almost every other wealthy, developed country guarantees healthcare itself, not the right to get surprise billed or screwed by your insurance company. And even those countries that are closer to the American model (e.g Germany and the Netherlands) don’t let these industries get away with egregious abuse of people at their most vulnerable, as happens in the US. I don’t agree that I want people with critical illnesses or disabilities (or anyone else) to get “access” to healthcare. I want them to receive healthcare itself and pay for it with my taxes.

SNAP and ag subsidies are also just price controls with extra steps. We can argue about their efficacy, but they’re far closer to price controls than anything like free markets, especially given the increasing monopolistic control of industrial agriculture in the US.