This is the first time I have seen something so revolutionary that is also backwards compatable.

I'd say that this is the future of the excosystem. If they had just kept all file names lower cased.

I use ZSH now, so it's not a big problem, but for bash this would annoy me.

Indeed! In fact something like it should have been the norm for awhile now.

It is also backward compatible with the default Gnu Linux file system hierarchy. They did a grate work !