Again, the assertion that all code written in rust is automatically "safe" (let alone correct) is false unless you say what precisely you mean with "safe" in very specific terms. While there are some ways in which rust is "safe" while c-family languages are not, these cases are _subtle_ and you _will_ have to understand modern C++ first to see what they are.
But yes, rust could turn out to become a new widely accepted standard for systems programming some day and depending on whether you believe that or not, it might make sense to "invest" your time into it.