I kind of agree with your sentiment but you make it sound a bit like artists don't use their brain, or are outright stupid - which I don't think you meant and I don't think is true.
Among the things that a SV engineer who manages that has to think about is if they have children, what happens when they die. It's nice to pass some things on to your children, but at the same time, plopping a million dollars in assets down on your kid all at once may not be doing them favors. Best to look at your options. (I'm not going into it here just because it's really more than fits into an HN message, nor should you take the advice from me; I'm aware that there are options.)