At some point, Edwards would be tap-dancing on his son's grave. I agree with you: initially, it's fine to mention, but as soon as he turns it into a standard campaign prop, he's crossed the line into creepy.
I take every opportunity that presents itself to talk (ad nauseum, I'm sure) about carbon monoxide detectors (and yes, you need one even if you "only" have a gas grill or gas logs), but this is beyong anything I've ever seen.
It's beyong comprehension to me; I cannot imagine what "place" you would have to be in in your healing process to let this go on.