Two reasons - modern languages prevent you from having to think about it at all. You shouldn’t have to sanitize, it should work - there are a load of issues t

Two reasons - modern languages prevent you from having to think about it at all. You shouldn’t have to sanitize, it should work - there are a load of issues that have nothing to do with sanitization but everything to do with memory. Race conditions, type confusion, UAF to name a couple. If we focus on sanitization, we still need memory safety to fix those Also sanitization is non-trivial for complex inputs