This made me realize why I found this whole question so confusing. I write code professionally, but don’t really do open-source professionally or personally. There’s just very little reason for two people to be writing code in the same file in the same week in my job. If it does happen, it still doesn’t usually come close enough to cause a conflict. The rare case I find myself resolving merge conflicts is usually because I have some super old stash that I decide I actually want to apply months later.
From a practical perspective, I’m good with anything above/including the bottom left to top right diagonal. It’s hard to argue with the effectiveness of an excavator if you know where the fiber optics are buried though.