I'm always happy to see F# get a mention, but using it inside Excel seems funny when you could just use it against a raw CSV file or whatever for data analysis/data manipulation.
It's not for people like us who even know what a CSV is, it's for people who have some scripting/programming knowledge, but mainly live in Excel all day.
Plenty of people who do know what a CSV is still sometimes (or frequently) use Excel, either for their own work or as a sort of "data app" that they can distribute to coworkers.
