The median American would not have to pay out of pocket, as nearly every American has health insurance (since the ACA, it is actually illegal not to have insurance).
I believe you're referring to the ACA's "individual mandate", which imposed a federal tax penalty for being uninsured. I won't argue whether that makes it illegal or not, but I can say that the individual madate was eliminated by the Tax Cuts and Jobs Act in 2019 [1]. There's no longer a federal tax penality for being uninsured.
[1] https://www.census.gov/library/visualizations/interactive/pe...