As someone whose C# is one of the main work ecosystems, I highly doubt it.
What I am seeing it that LLMs will push current programming languages down the stack, like now you're enjoying C# => MSIL => Machine code.
On my line of work I already can imagine the other side of the tunnel, more low-code/no-code tooling, orchestration agents, and much (much) less manually writing C#, Java and TypeScript.
I don't disagree with your take. My take on your take is that via what I'm suggesting I can envision that the low-code/no-code tooling can be expanded to produce a wider variety of more flexible programs with robust, consistent C# code underpinning them.
What I am seeing it that LLMs will push current programming languages down the stack, like now you're enjoying C# => MSIL => Machine code.
On my line of work I already can imagine the other side of the tunnel, more low-code/no-code tooling, orchestration agents, and much (much) less manually writing C#, Java and TypeScript.