C++ is one of those languages where people have deep expertise. They are on standards committees, they have a high profile in the industry. But yes if you have general programming experience you can certainly pick up modern C++ and not make a complete mess of things. It’s a multi-paradigm language with lots of gotchas that take a while to learn and require a career to memorize and stay on top of. But I think if you are an average developer in, say, a functional and OO language, you can be expected to become an average C++ developer with a little effort.