Johnson is a rich man who will not be personally troubled by a no deal Brexit. As far as I know he is healthy so the availability of prescription medication wont be an issue for him.
I genuinely believe that Johnson lacks the capacity to understand or feel empathy for others affected by his ‘bull in a china shop’ approach to anything he does.. Like Trump he is totally ego driven and fixated on his own satisfaction.
The tiny proportion of the UK public (90,000 approx) who made him prime minister have a lot to answer for in my opinion.