He attended the school of self-reliance. He should be applauded for tackling the challenge and doing the job himself, where otherwise it would likely have not been done at all.

Obviously, he's not a programmer. The script, for us, is bad. Perhaps if something important for him depends on this script working, he should pay a software developer to spend some time cleaning it up.

Could be worse. Could be a 641 line perl script.

He's entirely self taught. He's not stupid or anything, it's just that he hasn't had the experience of maintaining large codebases, attempting to modify his unmaintainable code or attempting to modify other people's unmaintainable code.