[snuxoll]

> Why is Mac OS OPTIONAL case sensitivity?

A relic from HFS of old, there's some notable applications that still fail hard on case-sensitive HFS+/APFS volumes so the default is insensitive (hey, Adobe, I'm looking at you - OS X/macOS 10 has been out for a decade and a half, get your shit together).

[baldfat]

I do contract work for Video/Audio production (Usually fix the crappy audio that they recorded UGH) I ran into that one a few times. Once all my work was over written because I capitalized the fixed files. The other time is we joined all our work into a pool and that crashed every Adobe application working on the job.