Think about Lightning channels as boxes. In the past, u have fixed size boxes. U have more sats? You need more boxes. And u always kept a few empty ones just in case u needed to store more coins.

Also, if a box doesn't fit by just a little bit, u nees a whole new box. So every wallet has a lot of boxes, some sitting empty, and which u had to pay to get/open.

Now u have just 1 box. A single magical box that changes in size to fit ur needs. No more clutter. it's also arguably cheaper. Voila.