Learning/teaching C++ is definitely a sore spot about it. Many still teach C++98 which is... Bad. It'd be like still teaching Java 1.3. yeah the syntax is the same basic shape, but pretty much everything else is different.

C++11 and newer are all largely one "category" in terms of recommendations. The CppCoreGuidelines is a good place to cover all that, but it's not a from-scratch introduction by any means