The smaller an item is, the less important how small it is. The laptop the person is carrying dwarfs the charger so these low wattage charger being smaller is a distracting gimmick.
Not folding pins is a silly way to make smaller as its just going to scratch or gouge a hole into whatever it is next to.
What is required are the larger chargers to get smaller, and to merge chargers, so 60W, 100W, 2-3-4 port chargers, merging PD with IQ2. Then we're talking materially real-world benefits to those who care about overall volume.
Not wanting to denegrate how 30W is getting smaller, just why is this product 1st then the really useful products are later?