There are two important factors in this. First of all, it shows just how unimportant individual candidates are in modern elections. Voters vote for the party or the party leader rather than their local MP to be.
The second is that the fuss over whether or not the signatures on the nomination papers are genuine has little substance. The nomination papers were submitted to Elections Canada and passed muster. That means they are official regardless of what those who signed them have to say later. In other words be careful what you sign. Changing your mind later may be too late.