> We used an Excel spreadsheet-based model with dozens of tabs containing complex formulas, endless pivot tables and unintelligible VBA code. > The tangled mes

> We used an Excel spreadsheet-based model with dozens of tabs containing complex formulas, endless pivot tables and unintelligible VBA code. > The tangled mess of VBA was re-written into independent Python modules, each of which performs a distinct function. Hardly a valid argument. I mean, VBA supports using modules too, so it basically comes down to an increased skill of the programmer and maybe more knowledge about the actual scope as it is a rewrite, but there is no reason why it could not be done with VBA.