End of Season Rewards: Toxic Players Get None

I want to know what you guys think about this new change because me myself have lost my rewards because of this new change. All tho at times most people can be toxic during games, Riot has made it a 3 month period which i think is a terrible idea. If someone were to get banned lets say right after the date at which you lose rewards, then they lose everything over one ban. No matter how much they improve on their behavior they are still going to be punished for something they did 3 months ago. I think its a terrible idea but some might think otherwise