[Rohansi]

Even something like Burst is, IMO, not really necessary in modern C#/.NET. It does well in benchmarks but they are almost always comparing Burst vs. normal C# in Unity. Problem is C# in Unity is stuck so far in the past that it makes Burst look amazing when it's usually not that much quicker. So if you are using modern .NET you're not restricted to a subset of C# and get good performance. And if you need even better performance there are plenty of new language features to get you there.

[Genbox]

I generally agree. However, there are several important optimizations that Roslyn does not yet have. I love the improvements in newer versions of the compiler as much as the next guy, but historically, waiting 20 years on getting basic inlining, hoisting and SIMD accelerations has left many of us with the only option of not relying on C# for performance.