Dying with $60 million while still living in squalor is profoundly stupid.
There's no indication this person lived in squalor. Simple life, yes; squalor is a stretch.
Also no indication of this person's values or desires. It appears there was more to this man's life than collecting "stuff." How was his estate distributed? Relatives? Charity? Whatever the answer it's probably what he wanted. And that's just fine...and certainly not for others to judge through their lenses.
Peoples' perception of wealth and comfort can be quite distorted. Because my wife and I drive old cars and live in a simple home, many folks in our town think we're poor. People at our church have offered us trips to the food bank and try to waive fees for certain church trips and activities. Makes me laugh because our net worth is most assuredly more than most people we know. And as volunteers at our local food bank, it's amazing (not really) to see the huge number of new/luxury cars pulling in for a trunkload of free food. Misplaced priorities, anyone? That's OK. I'm sure they live "comfortably" with free food every week loaded into their BMW X5s and Lexus RXs.
With our kids now grown, my wife and I live in very simply. Our long-term goal is to give away most of what we have before going to our rewards. Our wealth in life comes from loving thy neighbor and helping as able.