This has to happen because the Prime Moron Jihad Trudope can no longer afford to directly finance Al Qaeda since so many complained about the $10.5 million he gave away to known terrorist Omar Kadhr.  So he cleverly did research online to confirm that marijuana was being sold by terrorist organizations:
https://hightimes.com/news/was-your-pot-grown-by-isis-report-claims-the-terrorist-organization-now-sells-weed/
https://www.theguardian.com/world/2007/may/13/drugsandalcohol.alqaida
So by legalizing marijuana the Lieberals will have an easier time financing their Jihad against law abiding Canadian citizens.
Additionally, since there are fewer Chinese Canadian citizens who use marijuana as opposed to other ethnic groups, marijuana legalization is just a subtle form of the continuing racial discrimination against Chinese by the Lieberals, who are rewarding others for breaking the law while ignoring Chinese Canadian obedience to the law.