If you are referring to the Smith incident then that conclusion is wrong as the second incident was not a deliberate foul with an attempt to injure player. It was mistimed perhaps but not malicious. What is cynical is the behaviour of the Stevenage players including the 'tackled' player.
I wasn’t referring to any particular incident, just that deliberate fouls including body checks should all be candidates for cards. A simple free kick can often be beneficial to the team that commits the foul. It must be virtually the only sport where breaking the rules can gain an advantage.