I mean, it’s less of an issue on Linux for both design and user profile reasons, but imagine a world where somebody can send all the normie Windows users a file called Chromesetup.exe to sit alongside ChromeSetup.exe. Your grandma would never stop calling you to ask why her computer stopped working, ever.
Well, camel case does help readability on file names. But I guess that’s the point of case insensitive names, it doesn’t matter. However you want to call them will work.