r/mariachi

I was discussing this video on a forum. Someone said it was mariachi music. Although they may have meant it somewhat casually. It does somewhat sound like mariachi music to me, although I don't know much about what makes something mariachi music. It doesn't have the really bright horns I often hear in mariachi music. The singing is pop-ish.

https://reddit.com/link/1umel09/video/umjdgiaio0bh1/player

Do you guys play G (Sol) with a double stop or do you only play with the open G, Ive recently seen a video where the guy talks about the correct way is with only open G, but I learned with double stop. What are your guys opinions?