Shouldn't Riot implement a method to detect why someone DC'ed?

So this way they punish people in a fairer way.

So far there are 3 methods to DC:

1. Using the Exit button from menu;
2. Closing the Client from Task Manager
3. Getting DC'ed from the server( "Attempting to reconnect message shows up").

It's pretty obvious that using the Exit button is intentionally leaving the game, while in some cases you have to close the client because the game stucks or you even have to restart the PC/laptop altogether.

Instead of punishing people based on afk behaviour alone, the means of disconnecting should affect the severity of the punishment, with the server DC not yielding any punishment.