you have to prove vaccination to 1) travel to many international countries, 2) go to school (elementary, middle, high, college, or post graduate including boosters if needed), 3) for select occupations (ie healthcare fields), 4) joining the military. And when I say proof, actual records from a facility.
This individual liberty nonsense is theatrical drama at best and is eye rolling because it either demonstrates lack of basic knowledge of how things have worked with respect to public health or stem from sheer foolishness.
you don’t want to comply? That’s fine, you’re not entitled to air travel, movie theaters, dining establishments, live performance venues. They’re largely private businesses. No shirt no service? Just as legal as requiring proof of serologic protection.