So a lot many people were talking about Varna-vibhajan vyavastha in our society and Gita.
In Gita the division of labour was based on an Individual's Karma and not by birth. Also, there is a difference between Varna and Caste. Nowhere Sanatan dharma mentions about Caste.

Comparing situations back to Rig vedic period time and now will be very foolish as no one in 21st Century follows Varna-Aashrama System.
In this context ask you Grandpa whether he took Sanyasa or not?

In the Early vedic period there a mother had children hailing from all four varnas.

Don't malign our religion by quoting our shastras in bad light. You opinions are appreciated but don't give it a name and backing of our respectable religious texts.
Please.