Cute but without sim capabilities. As a professional remote nomad, Starlink is king. The router is decent but not for hard wired things. You could put this in between and be double NAT’ed but why? If you need to transfer files on the go, AirDrop or hotspot on your device and connect from the other. I’m not exactly sure what niche this product is filling without supporting SIM cards for being a true travel router.
Drop the Starlink into bridge mode, use the Gl.inet in front as your edge router, have WireGuard/Tailscale/etc connections back to more permanent infrastructure.
Even without a SIM card itself -- Android and iOS devices will tether over USB, so you can tether your own phone directly in and share the connection to other devices as well when you don't want to mess with Starlink.