I totally agree, but with the one exception - C++. The language (and its ecosystem) is so complex that I don't see someone without experience being able to be a lead developer of a large C++ project or to be able debug non-trivial bugs in C++ code. Debugging is one of my strongest skills, I can debug code written in many languages including C but when it comes to C++ I often helpless. I don't see myself being confident in C++ without spending years to master the language.