I can see both side of this article, and I would never put something on my dogs that is dangerous for me to come in contact with... yikes, dang that common sense thing.
I also realize that, just as with humans, medicines have extended the life span of those that we love. It wasn't that many decades ago that a person's life expectancy was very short and the decades could be counted on one hand with a finger or two to spare.
If there are statistics of the life span of wild dogs, I would bet they would be only a few years. So, I use that dang'ed common sense thing to balance medical technology with the well being of my pets. Is there a "right" answer for all, or even most, pet owners? Highly doubt it. I guess it comes down to self education and paying attention to your pets and what changes they are experiencing.