I guess so too, however, one would need to disconnect the powerlines from the module, because otherwise both the Framework eDP and the USB module will start backfeeding power e.g. for display backlight into each other, which won’t be a good thing.
And also, as you said, one would need to carefully check the pinout to make sure nothing goes wrong.
I guess the best solution would be to take your documentation of the Framework eDP connector and manufacture a small board with the Framework IPEX connector and a normal Display Port connector - while excluding all pins not needed (e.g. probably the normal DP connector will not have a Blacklight Power line attached to it etc). As a nice feature one could also connect a simple USB 2.0 port to the board as additional treat (correct me if I am wrong, but I think 31 USB_DP and 32 USB_DN are just USB 2.0 Data + and USB 2.0 Data - pins, so a normal USB connector. Adding an additional step down converter of… lets say 6-20V to 5V to the BL_POWER lines and grounding it as well to the 11 GND will then give a board which plugs right into the eDP port on the Framework Laptop and deliveres a “normal” Display Port connector with an included USB 2.0 port (type A, C, Micro B - whatever floats your boat ;)) - so you could directly connect a normal Display Port Monitor with Touchscreen via USB.
Hm, like the idea of the project, maybe I will do this one day … to the backlog with that 