Could be better for sure, but a graph showing the US as having 0 days of paid days off because the federal government doesn't mandate anything is misleading at best. Average US worker after 1 year of employment earns 7 sick days and 11 vacation days. And likely has some state and federal holidays off as well, and could very well qualify for state required PTO and sick time. But that doesn't get clicks and attention.
More data, if one is curious: