How can this possibly present a problem? People with specific needs developing new hardware - seems like a great idea to me. I can definetly see a use for this sort of device for network people. It could function as a travel router when needed. Another more obacure use could be penetration testing. Just because you can’t imagine a use case doesn’t mean it’s useless.
What do you think the obvious use case of the device ia then? It runs Linux, has pogo-ecpansion and is obviously niché as is. I would argue that it’s a device developed by Linux users/developers for Linux users/developers. In this case an Ethernet post is on brand as you said yourself. No matter if you think it’s “out of touch” or not, whatever you mean by that.