Regarding your problem, "I wonder what those children of then Brahmins who had the intellect akin to mine and who could not master the Vedas or the language did?", the answer is here:
"One who is born of a brāhmaṇa father but does not act as a brāhmaṇa is called, in Vedic language, a brahma-bandhu, and is calculated to be on the level of śūdras and women. Thus in the Bhāgavatam we find that Mahābhārata was specifically compiled by Vyāsadeva for strī-śūdra-brahma-bandhu. Strī means women, śūdra means the lower class of civilized human society, and brahma-bandhu means persons who are born in the families of brāhmaṇas but do not follow the rules and regulations carefully. All of these three classes are called less intelligent; they have no access to the study of the Vedas, which are specifically meant for persons who have acquired the brahminical qualifications. This restriction is based not upon any sectarian distinction but upon qualification. The Vedic literatures cannot be understood unless one has developed the brahminical qualifications."
(
Srimad Bhagavatam Canto 4 Chapter 1 Verse 3)
Sangom Ji,
I appreciate your deep analysis and memory. But, you fail to see the context.
I.
Right knowledge arises from right practices. From such knowledge and practices (actions), one develops proper intellect, hence would lose ego and become humble. Such Individual are called Pure.
Just by reading too many books like me, or getting a phD and claiming intellect does not make one self pure!
"The Vedic literatures cannot be understood unless one has developed the brahminical qualifications". Also, by simply parroting the vedic practices, without intending to pay attention, correct and change oneself will equally disqualify that person to understand Vedas/Brahman. [Srutis and BG say the same, and know that there are TWO sides of a coin].
In the Mahabharata, Stris like Kunti, Draupadi and Gandhari like women though were able, pativratas, were selfish, proud, arrogant. Ashwattama/Drona didnt behave like Brahmans. When Brahmans and kshatriyas are supposed to be self-less (not Advaita kind!), doing duties for the benefit of mankind/society, those kshatriyas were more inclined in family feud. Sudras, who dis-owned the dharmic practices on their own. These are the extreme cases, that Vyasa was talking about.
II.
In the chapter of
Sankhya Yoga,
Krishna talks about sama-darshana , seeing the Supreme Self in all. Then, how can He advise us to act any differently?
You may read the verses towards the end of this chapter, Mind is fickle [cancalam hi mana:], though mind reigns supreme and we praise someone knowledgeable , we may also degrade the same person for lacking good qualities. Like Indra is a deva, but still has 1000 timira eyes (defective, arrogant திமிர்). So, controlling the mind is a difficult task, only by practice you can bring it to your control.
We do things only that gives results. Unless we abandon attachments to results, we cannot become realized. So, devoting to that Supreme Person, we slowly abandon results.
Yogins cleansed their karma/mind through many births. So, the pure-brahmanas of today would have been murderer or cannibal or robber (pApa-yOni), or a sudra or Drona in earlier births, so they would have taken refuge in Krishna and progressed to a Yogin now.
He, Krishna, Himself clearly said, the power of prakriti/Nature (hence the senses, mind) is powerful, so we should accept the reality of our nature and work to progress further.
"
When Krishna says this "By taking refuge in Me, even men of evil birth,...", He promises "the supreme state".
He cites the pure yogins as example, "Then how much more the Brahmanas who are pure are My devotees. Hvaing obtained this transient joyless world, worship Me".
Brahmins may act like shudAs [one who dont accept vedic authority], shudras may become pious and accept vedas as is. People, things change, but the nature of reality and natural laws dont change. So, it is shAstrAs responsibility to make us know the reality of one's (and species') nature and existence, so they can accept, learn and progress further. The same shAstrAs also state that when tehre is no one offer/do naivedhyam to the gods (meaning there is no one wanting to progress), the dissolution takes place!
People may not accept their own nature or reality, but Reality doesnot care!