We get that you don't like rust. But it seems like a lot of people currently using C or C++ while like to use rust at work, and might disagree about the benefits of the language and tooling. I personally know a few friends in distinct domains who work on established C++ codebases and are in this situation.
There are also a lot of people who do not use C or C++, but use a bit of rust because it's so much easier to write fast little tools with it. I'm in this category. I even use threads sometimes, and it's reasonably easy. A crop of new unixy tools in rust seems to indicate other people also think alike.
Quite on the contrary, Rust is the ideal language to replace C and C++ where automaric memory option is a no go, like MISRA-C, kernel and device drivers.
Liking a programing language doesn't make me blind to what use cases it actually makes sense to use it, I don't see nails everywhere.
I think you'll find that most rational advocates for any language agree that their favorite language is only strong in its subdomain.
Any compiled language is more painful than a quick scripting one for quick projects where the project complexity is low and the language overhead doesn't matter.
Rust is substantially more painful to get compiling (due to the borrow checker) and harder to debug (due to tool maturity) than C# or C++. It's much harder to use than Python. Every language has its place.
But when you are investing the time to make an efficient, high performance program... or you have limited requirements like you said -- Rust becomes a great choice.
Every langauge has its place. I'm just dreadfully excited that we have a new choice now to trade a bit more time interacting with compiler errors for high performance and stability -- when that makes sense.
There are also a lot of people who do not use C or C++, but use a bit of rust because it's so much easier to write fast little tools with it. I'm in this category. I even use threads sometimes, and it's reasonably easy. A crop of new unixy tools in rust seems to indicate other people also think alike.