I get the impression that Microsoft is dogfooding C# on a greater level than before beginning with Span<T> and Memory<T> in .NET Core 2.1 (among others), still clearly ongoing here in C# 9. It's almost like a paradigm shift where I note the .NET Framework of past focused on higher level features and evolving the standard library first and foremost. I'm not sure if it's just me though, or if not, what the reason behind this push actually is.