[groundzeros2015]

C programmer have learned how to deal with memory problems and have whole suites of tools for finding them.

Is it cheaper to find them at compile time rather than runtime? Yes.

But it’s not an unsolved problem. Memory bugs are a known unknown.

[addedGone]

except that lately we've had a ton of CVE related to memory, so in practice it's not exactly right.

[groundzeros2015]

Rust itself has CVEs. Which projects are you referring to?