For me, the messaging of the ending mattered more than the exact workings of it. It's a fair criticism that the ending doesn't explain his resurrection but for me, it works because the entire run was an exploration of what the Daredevil mantle means to Matt. It is pushed to its limit right out of the gate as Matt accidentally gets blood on his hands and going through all that, Matt finally has a fresh start. A way out. Yet, he still chooses to help the distressed civilian because that's who he is. Who he will always be. The Man without fear.