Someone who's tasked with maintaining shell scripts better be familiar with the shell.
Kids today no longer know the shell. They think just writing some yaml files in ansible is sufficient. Giving them a shell script won't help at all.
Sounds like Kochan and Wood[0] need some love (and royalties).
Or is learning stuff deprecated these days?
[0] https://www.amazon.com/Unix-Shell-Programming-Stephen-Kochan...