Even through it has some flaws, e.g. it’s not fully memory safe (there are some programming languages that are even safer, like Ada)?
Overused? According to who?
Just in my opinion. It’s probably a trending programming language right now. More loved than C or C++ by some developers
How does one qualify how much a language needs to be used?
Are you saying Rust is being used in places that you feel C/C++ should be used, and you don’t think Rust belongs? Or maybe you are saying Rust is being used in places where C/C++ are not typically used, and you don’t feel it belongs there?
The closest thing to context you’ve given is that you feel Rust has flaws (all languages do), and that Ada is perhaps safer. It’s really hard to give any kind of answer without a properly fleshed out question.