I agree with pretty much everything they’ve said, though I’ve gotten more use out of the swappable parts. I have a desktop I use for things I need a powerful system for, but being able to swap in the GPU when traveling is great.
When I’m at home I have basically everything on USB C and the empty expansion bay.
When I travel I swap in the GPU and add an HDMI port and some USB a ports.
If you don’t have stuff set up like I do I agree it’s mostly just a reparability / upgradeability thing.