>"Dynamic array" refers to block of memory allocated via malloc() which you just happen to use as array.<

No. A dynamic array is an array which can be expanded or shrinked during its runtime life. The fact that C/C++ uses malloc for that (and btw, it's not the only way to do it) it's her problem. In other languages you have dynamic arrays that can be expanded/shrinked without using an extra line - main reason why nowadays Rust is a replacement for C/C++

>[0]< From you own wiki reference: "the flexible array member must be last"

LMAO, really? Well, that indeed is a bigger C quirk. In Pascal, as an example, I can have it anywhere inside the record (struct equivalent of C), and it can be just as "flexible".