People who make that suggestion don`t know that there are tools like ResolverONE. It is a spreadsheet that your finance people can use as usual. But when it comes time to validate assumptions and check the calculations, a professional developer can take the generated Python code, write unit tests and other kind of tests to make sure that it does what is intended. Creating spreadsheets could become a collaboration between professionals in finance and professionals in software development. The tools exist to allow this, but where is the will?