I would like to see the finance team that codes all their own C code and is adamant it needs to be in Emacs, especially because if they are that deep in Emacs I'd be wondering why they are insisting on C rather than Emacslisp or something even more esoteric like GNU Guile or someone's custom Forth to Fortran compiler…

But to answer the question, that is where I finished. We weren't "okay with it" that the finance team insisted on a C# to Excel files in SharePoint/OneDrive via Microsoft Graph turducken. We lived with it because the finance team had enough of the metaphorical keys to the car to be deeply in the driver's seat of that project. Sometimes you just have to grit your teeth and deliver what the customer wants.