There have been numerous other episodes in the NRL involving drink, drugs or violence without comparable sanctions.
And what about the Kiwis after the 2013 World Cup Stilnox saga, involving sleeping pills and energy drinks? At least six players were believed to be involved in those incidents, which took place before the quarter-final and final, and were a factor in the team's lacklustre performance in the Old Trafford decider, with New Zealand smashed 34-2 by the Kangaroos.
But most of those implicated played in the Four Nations tournament the following year and at least one player was forgiven almost immediately and took part in the 2014 Anzac test.
In this case Bromwich and Proctor will miss the entire quadrennial tournament, and who knows if they will still be in the frame for the 2021 edition in England, when they are both 32-years-old?
Both players were understood to be devastated when they got the news from coach David Kidwell, perhaps expecting that their club sanctions would be the end of the matter. But the NZRL feel they were backed into a corner, with a dammed if you do, dammed if you don't scenario.
There was the possibility of standing the players down for the first pool game against Samoa, and stripping Bromwich of his captaincy position, but that was never seriously considered.
The national body decided quite quickly the pair would be out of contention for the World Cup, because they had to make a statement.
There couldn't be a grey area, and the public nature of their offence has brought the game into disrepute on this side of the Tasman.
What makes this worse is that Bromwich and Proctor have given great service to their country, and were part of some of the biggest wins in Kiwis history.
As Kieran Foran said yesterday on Radio Sport, "they are both quality men who shouldn't be defined by one poor decision they made".
Let's hope they won't be.