Yes, there are specialized libraries for many things, and some of them even force use of a specific language. So by all means people should use those languages

Yes, there are specialized libraries for many things, and some of them even force use of a specific language. So by all means people should use those languages for those things. There are some pretty good Fortran libraries out there too. But that doesn't mean Fortran should be adopted as a primary language for every kind of task within a large company, and the same reasoning applies to C++. A general-purpose language that's full of pitfalls or requires lots of boilerplate even for simple things is not really a general-purpose language IMO.