> This guy is the designer of F# complaining that C# is not more like F#.

History, by way of the C# design team, has validated his opinions. Don Syme has had a massive influence on C# even when one degree removed from it's design. His complaints should be considered carefully.

Mark Seemann has a good write up about his contributions: https://blog.ploeh.dk/2015/04/15/c-will-eventually-get-all-f...