My understanding is that it's more of a multi-paradigm language; more like Scala than Haskell. And it's very apparent that modern C# itself has been influenced

My understanding is that it's more of a multi-paradigm language; more like Scala than Haskell. And it's very apparent that modern C# itself has been influenced by FP concepts a lot (in compare to Java, for instance). You don't need to be a "noisy fan" to see the benefits of the functional approach.