Rags to rags in three generations, don't forget. These people are not Warren Buffett and most likely do not share his skill, luck, and psychological investment.
Buffett’s giving almost all his wealth away so not the usual rags-to-rags.
The grandson has a pretty successful career already anyways (helped obviously by his relation to Warren)
The grandson was in FFA (Future Farmers of America) in high school. My guess is the Buffett family values environment was not typical suburban USA.