To be fair Kubernetes itself probably has 17k lines of bash, and it is a good thing. It is the first go-to project that I use as a reference for bash scripting best practices.

edit: wc reports 47023 lines in *.sh[1], out of which 23836 are unique[2].

[1]: find . -name '*.sh' | xargs cat | wc -l

[2]: find . -name '*.sh' | xargs cat | sort | uniq | wc -l