Some MacOS installations are case sensitive, others are not. Sometimes you find software that was written and tested on the case insensitive version that fail

Some MacOS installations are case sensitive, others are not. Sometimes you find software that was written and tested on the case insensitive version that fails on case-sensitive filesystems. Case insensitive filesystems made more sense decades ago than they do today. Case insensitivity is fundamentally a UX feature that has been implemented in the wrong layer. Rather than the filesystem itself being case insensitive, the search functionality in GUI interfaces to the filesystem should be case insensitive. And furthermore, the user should never be typing out the complete name of any file that already exists, because everything should provide auto-completions of existing filenames.