My employer can fire me for any or no reason and no notice and I’d be left with a short COBRA runway of suddenly-expensive healthcare, which I now can’t afford because I was just fired.
My employer can (and does) change my insurance provider, add or remove benefits, and I have zero say over that process. I certainly can’t vote for a new CEO or request a different provider from my company. Take it or leave it.
My health and well-being is tied up with the same entity that tells me what to do for 8 hours a day. That doesn’t feel like “freedom” to me.
Universal healthcare as a concept is not by itself related to authoritarianism. Indeed, guaranteeing healthcare (whether it be state-run like the UK or all-private like Germany) and paying for it through tax revenue rather than through employment subsidy is a feature of many Western democracies.