I think there’s nothing wrong with shipping the images, why should you need an Internet connection to pair your toothbrush (which of your using the app you must

I think there’s nothing wrong with shipping the images, why should you need an Internet connection to pair your toothbrush (which of your using the app you must want to do). But why can’t they be vector images? The pictures in the tweet looks like they could easily be replaced by vectors and the difference would be nearly unnoticeable.