I use git daily and still wonder why I had fewer merge issues on a larger team in the 1990s with command line rcs on Solaris. Maybe we were just more disciplined then. I know we were less likely to work on the same file concurrently. I feel like I spend more time fighting the tools than I ever used to. Some of that is because of the dumb decisions that were made on our project a decade or more ago.
I was trying to say that tools were better about letting us know that another developer was modifying the same file as us, so we would collaborate in advance of creating the conflict.