However, it doesn't matter how much modern we make C++, if you don't fully control your codebase, there is always going to exist that code snippet written in C style.

However I always have static analysers enabled on my builds, so it is almost as if they were part of the language. Regardless if we are talking about Java, C# or C++.

Just like most people that are serious about Rust have clippy always enabled, yet it does stuff that ins't part of Rust language spec.