I bought the Lenovo's proprietary Ethernet adapter from Lenovo directly for my Thinkpad X1 Extreme because I wanted to keep a USB-C port free. It didn't work at all under Fedora. A third-party USB-C to Ethernet adapter I bought works flawlessly.
If Lenovo's own adapter doesn't work on one of the most well supported product lines on Linux, that is not a good look.
To be very clear, I am a long time Linux user and most of the third-party stuff usually just works.
I remember handing an Ethernet cable to a friend and he said I was getting old. His laptop didn't have Ethernet! I still haven't recovered from the realisation.
My [old] laptop had a a card reader, hdmi, vga, a serial port and rows of usb2 ports, a plug for power, headphone jack etc etc
Back at his place he showed me the USB hub and the Rube Goldberg dongle collection. I said, ahh there you have all those connectors you didn't need.
I now think USB is magic. Not wanting to use it for everything means you are getting old. The future is a desk full of dongles.
https://resolume.com/forum/download/file.php?id=5430&mode=vi...