That's how it's offered in much of the US. Vacation and sick are rolled into a single block of time (which is usually too little for any major health issue).

I'd love for everybody to get 3 (or more) weeks of vacation and 2 weeks of sick leave. But, the chances of American employers jumping from literally nothing (in many cases) to anything resembling a reasonable policy is next to zero. Because stock market. Or profits. Or reasons.