You are not wrong, Richmond when it comes down to hard core opiate users. However, the first responders are seeing people dying from fentanyl that would not be caught dead at a injection centre. They are seeing "recreational" users in droves who rarely OD. This poison is being added to drugs that none expects to be contaminated. 

And you have to wonder about the distributors business plan. How does it make sense to kill off your customer base? If you a pusher, you want your users to consume more of your product. Something very weird is going on.