How do we know that this is "Puerto Rican Culture Plays Loud Music on Beaches"?

What if it's some obnoxious rebellious college kids who think they can get away with it?

What if it's some tourists, like from Cuba or Argentina, who are rich and so nobody in authority will handle complaints against them, because tourism feeds PR's economy so effectively?

What if most Puerto Rico residents don't really go hang out at the beach at all, and they stay home with their families, and they cook in the kitchen and they enjoy conversations?

What if Puerto Ricans are mostly like Americans, and their faces are all in their smartphones, and some of them play loud music and some ignore it, and some hate it but don't complain, and some complain but also play their own loud music to try and drown it out?

What if Puerto Ricans don't have one monolithic culture that you can generalize while we're here on an English-speaking forum, based on the mainland USA? What if Puerto Ricans don't actually eat elephants or giraffes? https://youtu.be/mzK9_TbzReQ?si=-QsUIwt_0SIcY-gt&t=28