Answer:
Yes, there is an ethical problem in the Canadian government's decision.
Explanation:
We know that the cigarette industry is obliged to add to the cigarette boxes, photographs that show the health problems that smoking can trigger. These problems are very serious and destructive, generating horrible images that aim to encourage people to stop smoking.
As the images are very strong, the ideal, for an ethical matter is to keep them in black and white, because leaving them in color can trigger psychological problems, malaise and intense discomfort in people. Provoking these sensations on purpose is very unethical.