Apple File System, the biggest improvement no one asked for, is broken and is a slap in the face of non Americans. Filenames do not accept any kind of special character, like the ones commonly used in many non English languages (see here for the why). This has been going on ever since the shift to APFS, and Apple has not bothered to usher a single comment about something that can corrupt thousands and thousands of files for most of the world. It used to be that Apple had the most restrict ecosystem because they claimed "Apple just works". Well, they continue to have the most restrict ecosystem (night mode, anyone?), and it simply does not work anymore. Steve Jobs must be rolling in his grave.