[2021] Why do I get a matchmaking ban after game crashes?

The game is not able to tell whether you crashed deliberately or by accident so a DC penalty is applied regardless. The penalty is kept short initially exactly for these reasons. If you find that the penalty is stacking up and you are crashing regularly then there's something else going on with your game, that needs addressing. If it's a technical issue we do have a tech sub forum on the Official Forum where you can seek assistance.