I think it's easy to think we shouldn't do this one thing because we don't have all the money in place to do all the things we should do to deal with the drug crisis.  But this is a yes or no question: should we open safe injections sites or not.  No one is giving us the opportunity to direct the funds to some other purpose.  
I think the answer is yes, even though it's only one part of the solution.  I think we have to save addicts's lives on a daily basis so they have time to reach readiness to commit to treatment or find an opening in a program.
I also think we should keep asking for the other things: treatment beds, prevention programs, policing, and national healthcare.  We should do all these things, not because they are easy, but because they are hard.  We need positive leadership toward positive goals instead of the assumption that there is no money/no support/nothing we can agree on.