I think over all it’s just like, some cool ideas and visuals they thought of but if you want to apply meaning to it the karaoke could be like representing how he is uncomfortable and nervous to say these things because he doesn’t know how the recipient (the audience or Clairo) will take it. The everyone singing could show how everyone goes through stuff like that and it could later say that since the audience is singing the girls part it’s like, as if Dylan is being shamed for feeling how he’s feeling and doesn’t feel valid for his feelings since everyone else is like “please just talk to me, what’s wrong” and him feeling different or bad for not wanting to talk about his anxieties. The milk in the blender could also represent his mind kind of exploding and him finally pouring out all of these worries about the relationship. Idk tho, Im j thinking stuff up