There is a bit of hubris... To give them credit he says in the article that the issue is that the SV hippies are all getting older and new people will take it

There is a bit of hubris... To give them credit he says in the article that the issue is that the SV hippies are all getting older and new people will take it over and criticise and change it. So he's not without some thought of the actual changes that will occur in the next 50 years. But they aren't thinking more about people not liking their project after they are gone