If these chemist and biologist were dying of natural causes and people were all up in arms and spouting unnatural theories for these deaths, then the tinfoil joke would be cute. It is the very large number of unnatural deaths occurring in this community that make it interesting to some and send up the red flags. One of these guys died from murder ok, but this many in such a small space of time??? Of course people with any natural curiosity will wonder.
It raises my eyebrows, too.
According to actuarial charts, chemists are one of the groups of long-lived people. In fact, I had a life insurance policy through the American Chemical Society, with the Hartford, and the premiums were much lower for me than for those in other professions.
All these chemists dying under strange circumstances over the past couple of years is very unusual.
Some people can regognize patterns when they see them. Others would prefer to be oblivious.