I agree there's safer languages than C, but nobody reads the 50,000 lines changed when you update the vendoring in a random golang project. It would be easy to introduce something there that nobody notices too.
It is generally harder to introduce vulnerabilities in readable language even more when it is memory safe. Sure life is not perfect and bad actors would have found a ways to inject vulnerabilities also in Rust, Go codebase. The benefit of modern languages is that there is one way to build things and the source code is the only thing that needs to be auditted.