Oh no, I agree with your point, too. But I think they are related -- even if there's no reason not to put the full help-text in a here-document (or an actual file, as long as the expected usage is to git clone first - the python code and the shell script could use the same help-text) -- I see few people/projects providing real help texts in their shell scripts.

Generally, people are very sloppy with handling arguments to shell scripts (probably because it requires a bit of boilerplate). But a nice '-h|--help' and maybe '-n|--dry-run' would be good to have.