Correct. The dev teams working on the ‘client’ part of the game (ie, the game) don’t have time to be contributing code to open source projects, but we don’t use much open source code anyway. But other teams within the company will be using Git for server code, and other non-client side work.

I’m not saying that Git is never used in game dev (it absolutely is), I’m saying that not everyone will have to learn it, or ever touch it.