The artist was raised somewhere in the east coast south and ended up living in northern west coast. About as far physically as one can go in the continental us without using florida or washington although I kinda wander whats farther. The tip of maine to baja or the tip of florida to northwest washington. I mean I feel like its gotta be the florida one given how big it is.
Because it’s an explicit informal plural second person word that standard english lacks.
Most languages have a distinction between second person and second person plural (and a formal word for second person singular/plural, which may or may not overlap).
Going from english to spanish gave me back the formal you that I am used to in turkish.