Which is how you get the mess that is the standard library of C++. Where regex is an unusably slow joke and everyone uses third party libraries for that instead.

And tons of parts of the standard library (and language) being cordoned off as "legacy, don't use for new development". Of course figuring out what you shouldn't use in C++ can be hard too. It isn't well documented (or universally agreed upon), and it takes having it as a full time job to be able to keep up with these days.

No, I much prefer the way Rust is doing it.