Look, I come from fighting games and not racing games, so this actually looks OK to me. The goal is to win the race by hook or crook, and you are expected to use every means at your disposal to win. It’s dirty play, but it isn’t against the rules, and you should expect all of your serious opponents to ram you in this situation.
It’s like snaking in Mario Kart DS. It’s a weird counter-intuitive mechanic that makes you go faster by powersliding constantly, even on straightaways. If you’re playing without snaking, you’re not really playing Mario Kart DS.
Oh! I didn’t know it was actually against the game’s code of conduct to ram like this. In that case, ramming is breaking a rule, and the offender should be reported and punished. What is the punishment for ramming like this, anyway? Is this win taken away from them?
If the developers don’t want players to ram each other, that rule should be enforced by the game itself. Either don’t have realistic collisions between players, or prevent cars from going offroad after a collision, or instantly take away the offender’s money or points.
Fighting game tournaments usually allow everything that’s possible in the game engine, but there are exceptions like intentionally crashing the game.