Gita was written by Vyasa, a poet.
Humans have a limited imagination and can imagine god only in terms of a human.
Even with his immense creativity, Vyasa could only imagine god’s viraat roop as having thousand heads and hands and people flowing into God’s mouth to die.
It’s just too simplistic. In its cosmic form, God can’t be like a human. God would be something beyond what we can see, hear, feel, or envision.
Therefore, as useful as Gita has been as a guide, it appears to be an excellent work of fiction by one of the greatest poets in India.
As Sadguru says, if bulls could envision a god they would imagine a big bull with huge horns.
That’s just what we do.