That's not how it works. Programming is done by humans, and humans make mistakes. No amount of 'standardising the approach' (whatever the hell that means) or design is going to prevent humans from making mistakes.

We keep finding security problems related to memory management: buffer overflows, double frees, etc. You think all that code is written by amateurs who don't know what they're doing? No, it's written by professionals who know exactly how to prevent these things. But they are human, and they do make mistakes.

You can either bury your head in the sand and ignore this reality, or you can do something about it. A good way is to use a language that doesn't allow you to make these kinds of mistakes in the first place. That means a memory-safe language. That means one with strict static typing. This not only prevents bugs, it also frees up the programmer's mental bandwidth. If you don't have to think about accidental complexity you can put your energy into the actual problem you're trying to solve.