If you want a decent dock you have to spend a bit of money. I went through this pain before accepting the cost and buying a CalDigit Thunderbolt 4 Element Hub[1]. Run's two 4k displays at 60Hz, any peripheral and charges my laptop. So good I bought a second. 1. https://www.caldigit.com/thunderbolt-4-element-hub/
It is missing Ethernet, which seems to be important to the author. Having heard positive things about caldigit, I got their USB-C Pro Dock and I get frequent screen blanking with my M1 Mac, and often some of the USB ports fail to work. I don't use the ethernet port, but I think it is a Realtek (so likely the same thing the author is complaining about) I have spoken to caldigit support and so far they have replaced th…
CalDigit's TS4 has Ethernet (2.5 GbE). I've been a happy TS3 user for years.