No - since Tableau Server isn't really designed to be a "CSV factory" in the way these folks are using it. I don't really have many thoughts on this
One thing that might be interesting to see is what happens if you make sure that browser rendering is NOT occurring this call. I wouldn't think it is, but appending :render=false might be something.
I would also take OUT the MSFT stuff and see if the same thing occurs when using Python, NodeJS, etc...