> The job is literally killing him
I don't mean to be snide or to blame your brother (addiction is a powerful thing), but I'd say that maintaining a smoking habit despite having suffered not one but two heart attacks sounds more like putting a frog in a pot with some water, splashing boiling water into the pot twice, scalding the frog both times, and having the frog decide to stick around and see what happens next.
Scholarly articles on nicotine replacement show that for every person who successful quits using that it costs around $7k, magnitudes more $$ than vape. For some people nicotine is one of the only things they have that makes them hate life less and be able to cope better. On some level I find it unfair that people should say 'well you shouldn't do that categorically' when the vast majority of people have their own individual preferences on vice.
Everyone has their own individual vice preferences, but some vices are demonstrably worse for health than others. I'm not one to tell a person to quit smoking, but it seems likely that in this case, the guy's two heart attacks did just that.
Is this profit, revenue or in transactions?
We all know what is the end game here. Driving a vehicle will be recreational activity.