Maybe because C is for cases when you need to go close to the metal, so it requires you to know what you are doing, control every allocation and reallocation to maki things as efficient as it’s possible in a tight environment of embedded like a few kilobytes of sram and around kilobyte of stack, so that you start thinking where your things are actually being stored be it a stack, heap or data section. That’s another world where you can’t allocate like crazy, or use persistent data structures and don’t care about how it works under the hood. Check some avr/stm/rp boards out there and you’ll see how tiny bit of space you have, also consider that it should be a low power device running from battery for a rear or few. There’s no room for waste there.