You have understood little, and are perhaps approaching it from a prejudiced Western viewpoint. All it is teaching is that one need not hesitate to fight injustice.
Perhaps a deeper reading will help. Its not for nothing that Western greats like Ralph Waldo Emerson amd Henry Thoreau were enamored by the Bhagavad Gita.
Good list https://en.m.wikipedia.org/wik...
J. Robert Oppenheimer
The Trinity test of the Manhattan Project was the first detonation of a nuclear weapon, which lead Oppenheimer to recall verses from the Bhagavad Gita, notably: "Now I am become Death, the destroyer of worlds".
J. Robert Oppenheimer, American physicist and director of the Manhattan Project, learned Sanskrit in 1933 and read the Bhagavad Gita in the original form, citing it later as one of the most influential books to shape his philosophy of life.[9] Oppenheimer later recalled that, while witnessing the explosion of the Trinity nuclear test, he thought of verses from the Bhagavad Gita (XI,12):
-[10] If the radiance of a thousand suns were to burst at once into the sky, that would be like the splendor of the mighty one...[11][12]
Years later he would explain that another verse had also entered his head at that time:
We knew the world would not be the same. A few people laughed, a few people cried. Most people were silent. I remembered the line from the Hindu scripture, the Bhagavad Gita; Vishnu is trying to persuade the Prince that he should do his duty and, to impress him, takes on his multi-armed form and says, 'Now I am become Death, the destroyer of worlds.' I suppose we all thought that, one way or another.[13][a]
Henry David Thoreau
Henry David Thoreau wrote "In the morning I bathe my intellect in the stupendous and cosmogonal philosophy of the Bhagavad Gita in comparison with which our modern world and its literature seem puny and trivial."[18]
Hermann Graf Keyserling
Hermann Graf Keyserling, German Philosopher regarded Bhagavad-Gita as "Perhaps the most beautiful work of the literature of the world."[19]
Hermann Hesse
Hermann Hesse felt that "the marvel of the Bhagavad-Gita is its truly beautiful revelation of life's wisdom which enables philosophy to blossom into religion."[7]
Ralph Waldo Emerson
Ralph Waldo Emerson said this about the Bhagavad Gita: "I owed a magnificent day to the Bhagavad-Gita. It was as if an empire spoke to us, nothing small or unworthy, but large, serene, consistent,the voice of an old intelligence which in another age and climate had pondered and thus disposed of the same questions which exercise us."[20]
Wilhelm von Humboldt
Wilhelm von Humboldt
Wilhelm von Humboldt pronounced the Gita as: "The most beautiful, perhaps the only true philosophical song existing in any known tongue ... perhaps the deepest and loftiest thing the world has to show."[21]
Bulent Ecevit
Turkish Ex prime minister Bulent Ecevit, when asked what had given him the courage to send Turkish troops to Cyprus . His answer was "He was fortified by the Bhagavad Gita which taught that if one were morally right, one need not hesitate to fight injustice".[22]
Lord Warren Hastings
Lord Warren Hastings, the first governor general of British India wrote: "I hesitate not to pronounce the Gita a performance of great originality, of sublimity of conception, reasoning and diction almost unequalled; and a single exception, amongst all the known religions of mankind."[23]
Sunita Williams
Sunita Williams, an American astronaut who holds the record for longest single space flight by a woman carried a copy of Bhagavad Gita and Upanishads with her to space, said "Those are spiritual things to reflect upon yourself,life, world around you and see things other way, I thought it was quite appropriate" while talking about her time in space.[24]
Annie Besant
"That the spiritual man need not be a recluse, that union with the divine Life may be achieved and maintained in the midst of worldly affairs, that the obstacles to that union lie not outside us but within us—such is the central lesson of the Bhagavad-Gt." - Annie Besant[25]
Rudolf Steiner
"If we want to approach such a creation as sublime as the Bhagavad-gita with full understanding it is necessary for us to attune our souls to it. "- Rudolf Steiner[26]