Recently I bought a L14 AMD and it doesn't even come with a decent keyboard or touchpad. The touchpad feels laggy and clunky, there are many of such reports for L14 and T14 models. The built-in keyboard ocassionally gets stuck pressing a key, and the I need to suspend-and-resume to unstuck it.
As you said, usb-c dock problems are a nightmare. Better get a good usb 4 cable with 40 gbps and 100 watts, or else you will spend countless hours doubting if problems are because of the cable. Spoiler: it's not any particular cable, it's the laptop.
For comparison, we use dell latitutes (intel) at work and they just work fine. I wonder if problems are common to all modern thinkpads, or if it only affects AMD models.