Logitech held out on moving some of their more niche products to USB-C until they were forced by the EU. I'm sure when the author _started_ their journey they had not released the Ergo S yet, looks like it came out September '24.

I also gave up on waiting for the Ergo S and grabbed a Kensington TB550. The name is awful, but the trackball is excellent.

I was thinking the same :) I have an MX Ergo from 2018, I'm not changing. The USB-C change isn't enough for me to change and I don't mind the click while WFH.