One thing this does is massively increase Canada's organ donor/tissue donor pool. Canada has a huge donor shortage and lots of U.S organs will go to Canada for one reason or another.
Don't they use a lethal coctail? I would imagine that makes it so the organ cant be used?
Honestly, I have not looked into it much more than to see perfectly healthy people kill themselves because "depressed". If you were that suicidal/depressed you didn't need the government to end you or help you do it. I don't know how shit like this fly's anywhere.
Nothing stops transplant. If they euthanize and they can get to an operating room within a certain time limit (less than an hour), they can explant. Organs are flushed with sterile blood solution...