Technically this ain't true. This is actually how the virus got here from other countries. It infects people and they disperse the virus around the world (viruses are highly efficient and rely on hosts to carry them to new potential hosts).
They actually showed through cell phone data (companies Tectonixgeo and exmode) how during spring break most those kids in florida were from others states. They kicked it at spring break then got on a plane or in a car and went back home to 20 plus states around the country. So if any of them got infected during spring break they helped spread the virus all around the country.
Thats how viruses work. What some does in another country or state can affect you.
In the end folks are more so getting on people for not following guidelines. Which are 6 feet distance and wear masks.
Most people will get infected locally. Who among us realistically has interactions with white beach goers? Yes yes chain of transmission and all that but more likely grandmother will get it from someone in the house who decided to go to the store everyday of the week. It's all problematic honestly but we only single out things that don't make us look like selfish shytheads too.
And yes, six feet of social distancing is fukking difficult in most of the urban areas of the country, or even a thriving suburb. Wear that mask.