i’m thinking it’s an intentional turn of phrase

so for example in native English, if someone upset some people, you might say, just to be creatively different:

“oh boy. people be big mad”

it is an idiom, not necessarily officially part of the language. just saying things in a silly way to be different

“now you’ve done it… People be cryin’!”

I think it might also be an echo of pidgin English/Creole/caribbean English? Would be an interesting language dive. Ask an AI!