I am also wondering why it was done this way. I know one could argue that to amend the Constitution Act, 1867, the approval of seven provinces is required, and so on. But there is another argument that says the Parliament of Canada can unilaterally amend the section stating that an election must be held every five years, or at the very latest in the fifth year.
I would like you to comment on that, because I'm rather confused about the reason why the Canada Elections Act is being amended, rather than the appropriate section of the Constitution Act, 1867.