Finally $5 bill receives an upgrade

The Bank of Canada released the new $5 bill into circulation yesterday across Canada.  The new bill will match the other bills in the series with its holographic strip, as well as numerous other security features.  The other bills in the series had received their facelift long ago, and this bill finishes that series of changes.  They say that these new bills will reduce counterfeiting, but I don’t see how this is going to help.  Since in Canada, we continue to use older bills that haven’t been made in decades, what is to stop the counterfeiters from using their old style bills?  I guess for people that see the new style bill they will have an easier time checking to see if it’s legit.  At least the new bills are all matching now, and look futuristic with their holographic strip.