Why it worked
The video likely performed well due to its aesthetic appeal, showcasing a luxury branded item in a visually pleasing way. The demonstration of a practical feature (card holder) combined with the aspirational nature of the brand appeals to a wide audience interested in fashion and accessories.
Product placement
Louis Vuitton: (a) it APPEARS - a watermark, a channel or studio logo, an end card, a credit, a name on clothing, a repost stamp. Removing it would not change what happens in the video.
iPhone 16 Pro Max: (a) it ACTS - its interface is operated, it generates or edits something, a visible result comes from it, or someone says what it does for them. Removing it would change what happens in the video.