std::array is stack allocated array with known size compile time.
std::vector is dynamically allocated array (on heap).
So C array equivalent = std::array, not std::vector.
The point of the parent was to write C++ code the C++ way. Most arrays in real programs should be std::vector.
Imitating C arrays with std::array is the perfect example of bastardized C/C++ code.
Using std::array is writing code C++ way. If you know size of the array compile time and you know it will fit the stack then there is no reason to use std::vector.
I know, just a class version of the C-array but std::vectors has lower performance. I believe that std::array or C array are good enough for problems with non-dynamic input.