So it looks like you have decided on C++ in the end. A good choice and frankly, my only choice (due to lifespan, support and availability).
However, I can't help but feel that you arrived at this conclusion in the wrong manner. You really need to evaluate for yourself what works rather than be told. Otherwise your next hurdle will be just as difficult for you (OpenGL, DirectX?).
Also... I don't know the best way to tell you this but "the game industry" is unlikely to have written you an email. It cannot write emails since it is not a single entity. It also has no hands making it very hard for it to write emails.
So "Mr Game Industry" (or Jason as in your other post), looks to be responding with a bias that you are entering game programming as a career. This has a massive impact on what choices you make. It means you will be working in large teams and with existing (sometimes legacy) codebases making C++ the obvious choice. Basically indie developers might well choose something else (and Python is still a very valid choice here) so still evaluate and choose for yourself!
... or if you do want to be a professional game developer. Learning them all is the only reasonable option.