Commentators have made mention of the fact that the act of bumping off would-be defenders was something that turned former All Blacks wing Jonah Lomu into the sport's first big star.
Not surprisingly, Tuilagi denied the act of foul play, but judicial officer Antony Davies, an Englishman, upheld the citing.
Not to put too fine a point on it, but Thieffine and Davies need to get out more, a point of view gaining traction with a wide variety of former international players.
Former England captain Lewis Moody tweeted: "I'm appalled Alesana has been banned for 5 weeks. How is running into an opponent an act of foul play. Should we play walking rugby now!!!"
Former Wales flanker Martyn Williams said: "Crazy decision, seriously think by the time we get to the 2023 World Cup it will be a tag rugby tournament."
Ben Kay, a commentator for ITV and a former England forward, said: "I'm all for making our collision sport as safe as possible, but really? World Rugby I suggest you review this decision."
Others have pointed out the fact that England player Tom Wood escaped without sanction after committing a much worse act of violence. Wood made contact with the head of Wales fullback Liam Williams, knocking him unconscious, yet was free to play the next week against Australia.
- Patrick McKendry in Newcastle