Your simple script is someone else's bad day. Imagine a shell script that needs to do a dozen things in sequence. Is it just a list of 12 commands? If so, do they even have error checking, whether by "set -e" or with explicit checks? What if it does fail and it gets restarted? Are any of the steps going to cause problems if they run twice or are they smart enough to not do anything this time? How about if you have "critical sections", such that you always have to do A-B-C, and if any of them fail, you have to undo them in reverse, C-B-A? Do any of the parts need locking so that multiple instances don't run at once? Do you need timeouts on any of your calls in case something gets stuck? What cleans up the locks if you exit uncleanly? Will another instance be able to start up and continue?

You can handle all of these things in a shell script, but that's not the question. The question is: will someone who's "just writing a quick script" think that far ahead?

My experience so far suggests the answer is usually no.

It's not the language. It's the mindset.