[iExploder]

definitely learn C++ if you are interested about how computing works "under the hood" of modern high level languages

even if C++ went away next year (which it won't, and you can be sure c++ will be here until eventually quantum computing takes over ;) the concepts and understanding of computing you'll learn is still valuable

in terms of advancing your career as a developer, realistically speaking it will advance your career most probably only if you make a switch to jobs that require real time / embedded / high performance / security. for other fields of programing today, c++ level of understanding will not advance your career as much as being a good communicator, acquiring connections and brown nosing