Actually, it does. You see there's this thing they compete for. Its called the World drivers championship. When a driver gets that much of an advantage while the driver right behind him cops a massive penalty and gets put well down the field, then its does have an impact on him as that driver that cheated, will gain a massive point advantage.
He very marginally got done for a technical infringement which was more to do with the unfortune of timing with the safety car coming out; regardless he got punished for it... and Alonso is still bleating?!?!
Give it a rest eh