I tossed one of those Satechi adapters because it crashed my home network whenever I unplugged the laptop. Apparently its ethernet port would repeat any packets received, creating a network loop. (!!) Their tech support did not seem concerned and suggested I unplug power when not in use. So much for one plug.

I embraced the two-plug paradigm and now use an Anker USB-C adapter _without_ power pass-through. It has worked well with both Windows and Mac laptops. Admittedly, I would not notice if ethernet capped at 300 Mbps.