Well people to say an unpopular opinion, let us understand that the Mahabharata that we have is not a documentary that everything written in it has to be a literal truth.
Maybe Vyas' Jaya was a documentary, but the moment Vaishampayan narrated it to Janmayey it became a tale and not a historical documentary.
The version we have is by someone who composed a poem on the narration of Ugrashrawa of the tale that Vaishampayan narrated. No where his/her intention was to record history but it was now more for an entertainment purposes
Just like today we have historical shows added with a lot of fictionalised elements to make it more interesting. Lot of things would be added by him/her to make it interesting. For example Yaksha Prashna, stories of magic vessel n Durvasa that could definitely not be history. He would have added folklores and his interpretations about it as well
They wouldn't have definitely been dramatic enough to address each other like " Oh bull of Bharat Vansh" no one who is noting down the events can know the exact words used by others in a conversation (especially when there is no recording). We must not take it as every word being historical.
Yes there was a war between two set of cousins which somehow engulfed nearly the entire country and caused immense destruction.
There were people referred in the epic, Yudhishtir did stake his wife and Duryodhan, Dusshashan, Karna tried to disrobe Draupadi, that however doesn't mean that everything written there actually happened or the conversations mentioned are historical truth. We must not try to take everything literally