What I am saying is that the current soldered CPU approach on laptop space is not that different from switching an ARM SoC on a daughter board. The only difference is that you cannot change RAM. Maybe that too will change as you said with CAMM standard. Next is that some SBC already supported PCIe for external M.2 storage, so you can theoretically hook up a removable GPU there.
Now, what to do with the old SoC daughter board? The same as with the old framework motherboard. You can repurpose it as another computer.
The point is, framework repairability comes not only from part swapping, but also the promise of providing schematic for board level repair. They can totally make ARM based laptops with SoC repairable if they wanted to. But I suspect they will not (at least in the near future) since there is a lot to do for them.