Not at all what is happening. 
Trudeau is doing two things, both of them involve hoodwinking the public. 
First, he's trying to take the heat off recent feedback he's received for continuing the war on pot, by dangling the carrot of we'll legalize on this date. 
Second, he attempting to baffle us with the promise of legalization, while making it clear, in the fine print, that he plans to strictly control the cultivation and production aspects, which will keep the black market involved, and keep cultivation criminalized.
The date for this announcement is meant to appease the stoners, yes, that part of your comment is right, but the rest is just ill informed machination.