My company started using a style-checker to gate pull-requests. The checker by default is very picky about naming conventions. The problem is if you adopt the style-guidelines for an existing library, then you must change code for all users of your library.
With Nim, you can change your naming convention whenever you want.
I'm not trying to re-open that can of worms. I know people have strong opinions on this. I just wanted to mention that there is a real-world use-case.