I'm a math layperson, but isnt this a problem with the application of maths and not math itself? By your logic Einsteins relativity is wrong because it doesn't work for quantum physics. Which also doesn’t prove math is wrong.

It's easy peasy. Read a tutorial and it's done. Easier than C. Biggest problem with COBOL software is most programs are idioticly huge and have been patched and expanded for decades. Touching anything will break everything. Source: i patched y2k