It's stopped evolving and can't really shine in any of today's domains.
It will still be around for decades, but mostly as legacy. I.e: not anything which is required to be learned.
There's also those that misguidedly use C when they shouldn't (e.g to speed up Python code). It's unfortunate, but such is C's siren song - mesmerizing one with promises of speed only to be dragged into the depths of undefined behavior.
Here's what I know:
* AI / ML can be done in many languages, but no one's seriously considering C, despite the performance requirements. C++ is sometimes used.
* self-driving companies are hiring for C++.
* Mobile is Swift / Kotlin with C++ for performance-intensive code where appropriate.
* Web is anything except C and C++ (thankfully)
* Game development is C++
* The enterprise has switched to web technologies or is still using Java/.net.
* The desktop varies, but it's mostly .net / Swift + Obj-C / C++, with the exception of gnome perhaps, which I'd argue is an anomaly.
C is still holding on in kernels and low level embedded, where it's expected that C++ and maybe Rust will continue to squeeze it.
Personally I don't care that much about the above two. Banging the same bits for decades gets tiresome.
I'd go into this more but I don't feel like explaining these things to people ad nauseum. C is one of the most used languages around the world, in new projects, too, and nothing you've said changes that.
Some of the things I listed are C++, which is a different language, which kept evolving unlike C and also unlike C is in demand today for all sorts of hot domains. The two can't be mixed.
But in a way, you may be right ... all the critical new lower level programs like web servers are now mostly written in Go, Rust and C is not favourably considered for them ...
> misguidedly use C when they shouldn't (e.g to speed up Python code)
The Python virtual machine itself uses C to speed up Python code. Python's compiler is even written in C instead of being properly self-hosted.