From your standpoint, a person who is not the user but a company owner, with a certain psychological traits to be interested in it, would he be expected to diversify his bitcoin portfolio to the max, so to say?
There are a million different ways to hold crypto and there are also a million different hacks and scams to steal it.
I couldn't even begin to speculate on how the doctor managed his holdings. Some enthusiasts are prudent to the point of paranoia while others act recklessly and put their money at grave risk.