Exactly! What are you going to do if your router dies (or you mess something up fiddling w/ things)? I may only need it once/year or so, but when I do, it's really important and I most likely can't find the dongle.

An RJ-45 port could totally fit on there if they used one of those flip-down things that Dell has on their professional line.

It’s really not. I have one on my work laptop and have never plugged an Ethernet jack into it. That stays permanently in my dock and gets transferred to the laptop via USB-C. All other non-desk work is done via … WiFi. Shock! Literally can’t tell the difference when making money.