Thin things look nice in industrial design. It's why phones stopped being chunky as soon as the battery packs could be scaled down. It's why EV cars are in higher demand than EV trucks/UVs. Watches became a prestige product when they were thin enough to wear on a wrist instead of fitting in a pocket. Flashlights became a collectors hobby after they shrank down to be palm sized while retaining their brightness. Cameras became ubiquitous once they stopped needing a tripod and flash powder. Smaller things, thinner things, are more attractive to consumers.