The Framework laptop expansion cards are all USB-C dongles in a different form factor. It's purely an esthetic choice. You don't like the dangle. Thats a valid opinion. I have a USB-C hub that handles all the connections I need in a dongle-dangle.
The only real objective benefit of it, IMO, (and this is HUGE) is the repairability. I am a huge fan of that, and hope that other makes would step up (or be forced to step up) and make the same kind of changes.