Probably as a consequence of all the propaganda telling everyone it is safe and necessary, and possibly as a consequence of the coercion they are using to make people take them.
Just a guess.
He also wrote the software that captures your signature on an electronic tablet and holds the patent for ALL of them.
It sounds like he was well off financially. So, he had to have taken the jabs quite voluntarily. Not under coercion such as threat of loss of job.