If I would add another array, it would look like:

int c_style_array[2][5][3];

There is also no jumping back and forth. C declarations are also recursively constructed. One can complain about the irregularity of pointers syntax.

Yes, if you only use arrays, then it doesn't make things confusing. The point they were making (as I understand it) is that putting a pointer inside std::array doesn't change the way you have to read it, which is not the case for C arrays.