Clarification：This device is not produced by Purism, it is just because there's no such vendor (GPD) in h-node's database.
The GPD pocket 3 is a UMPC which is really powerful for an UMPC and is useful in many scenarios, but not in a free software activist's hands.
Tried several GNU/linux-libre
distros, yet none of them barely successfully initiated the desktop environment. Intel Iris XE graphics are relatively new graphics card, currently free software support of these GPUs are still immature.
All the components of this computer are soldered to the board except the M.2 SSD so it's really hard to switch the WLAN card. And the default card which are AX201 (N6000 model) and AX210 (1195G7 model) have no free driver available in my knowledge.
Since the desktop environment failed to start, cannot confirm whether the webcam is working or not.