Coming as it does on the eve of the 25th anniversary of Bill 101, Bill 104 symbolizes the end of an era in Quebec. It tells us that francophones are confident with the gains French has made and that there is no political appetite in the francophone mainstream for more restrictive measures. One really has to go back to the days preceding the Anglo-Saxon wave of immigration to Montreal, which followed the decommissioning of the British soldiers after the Napoleonic wars, to find a time when French was as strong as it is today.
English school boards didn't always believe so. When Bill 104 it was introduced, in 2002, the English boards argued that it was quite unnecessary, because the number of children attaining access to English schools through this avenue was very small and "virtually meaningless.