Language makes a big difference,
BTC IS Still LEGAL TO TENDER, (tender simply means to offer)
"Legal Tender" is a designation of how Government recognizes money simply for taxes and such as mentioned where it's offer MUST BE accepted.
That said, most people aren't smart enough to understand this simple concept and will shy away from BTC some times.
We live in a world whereby language is everything. When Government clearly states something isn't legal people automatically assume that means it's illegal. I am not saying BTC is but certainly I can see if push comes to shove the Canadian Government driving a solid wedge between the banking system and Bitcoin, like what the Chinese Government did, initially people said it won't hurt China but now if you take the time and watch fiatleak.net you'll see that the trading of bitcoin is pretty much gone from a flood to a tiny trickle.
I should also note bitcoin started at $1000 CAD at MtGox today, its so far down to $965 CAD and continues to drop. I wouldn't be surprised if it drops down to $500~$600 range or less sometime next week.