SR system is so stupid sometimes

Is there a reason why you lose SR for contact after a race? I run a clean race for 20 minutes straight and at the end I get full on crashed into by the person in the adjacent place to me for no reason multiple times. It ruins my SR gains for the entire race and it’s not even during the race! If I had my wheel base set to a higher nm I could’ve sprained my wrist or worse. How stupid