> All this "rewrite it in rust for safety" just sounds stupid when you can compile your C program completely memory safe.

All of the points about Rust were made in that context, and they've pushed back against it successfully enough that now you're trying to argue from the other side as if it disproves their point. No one here is saying that there's no point in having safer C code or that literally everything needs to get rewritten; they're just pointing out that yes, there is a concrete advantage that something in Rust has over something in C today even with Fil-C available.