I won’t defend their CLI arguments other than noting that they usually closely follow the also poorly-named APIs[1], but locking up is highly unusual — do you have something like AV software or other quasi-malware which might be interfering with normal I/O? We’ve used it for many millions of files over the years and that’s never been an issue on macOS or Linux.

1. AWS needs a Chief Consistency Officer who can block shipping until you cleanup the prototype slop