I never said they should be part of the language, I said the rust community over-emphasizes the "safe" part of having the unsafe keyword and neglected the part that's actually useful in keeping things safe.
Another poster responded to me stating they are starting to work on those tools, so it looks like the rust community is starting to come around.
It's just that I've seen a lot of people tout the safety of rust as if the unsafe keyword was a panacea that automatically prevented problems. That attitude is really what I was responding to.