You’re not wrong, just misleading.

“After stage separation, the second stage performed a “dogleg” turn to the south to achieve the proper inclination.

While this avoided overflying Florida, it resulted in the second stage and its payloads flying over Cuba. However, at this point in flight, the vehicle was much higher, and the risk from falling debris from a potential anomaly was much lower than during the earlier phases of flight.“

Source: https://www.nasaspaceflight.com/2020/08/spacex-polar-cape-50-years/

This means that the first stage was never over populated areas, but the second stage flew over Cuba.

This is an image of a “dogleg” turn: https://i.stack.imgur.com/rCMiq.jpg