I think one of the issues with C++ is that there seems to be this clique of insanely smart people who are focused mainly on the language itself. They're experts in the complexity they've created and they have nothing to do but study that complexity and evangelize it. They're not really considering the audience of mediocre developers whose minds are mostly concerned with problems that need solutions and not language minutiae. A language and libraries are means to an end, not ends unto themselves. Us normies don't always have the luxury of keeping up to date with language changes - we're busy trying to get work done and ship products.

There are hidden costs to technology choices. I work with a smart guy(also a C++ zealot) who loves CMake and constantly evangelizes it. CMake seems great but the problem is that it's yet another language/system which people need to learn to be productive in our environment. GNU Make has its problems, but I can also scoop up a dev off the street and there's a 90% chance they've had experience with GNU Make and can immediately understand what's going on. Now I'm not saying CMake sucks, it's got a lot of great features, but by using it you gave up something without possibly even knowing that you did. Simplicity is a feature. Banality is a feature. Unless you're getting something good in return, don't sacrifice them.