I went back to Saigon after 40 years and it was so different. Parts of the city had changed where other parts were much the same. But the people were as different as if a century had passed.
Sai Gon in the 1970's was centuries ahead of the Cambodian border Mekong Delta. But, you are absolutely correct about the people. In 1995, things hadn't changed that much. Today, my head spins and I sometimes wonder if I am in Viet Nam or America.
Mostly the changes are for the good. Still, some important things have been lost.