It still hasn't occured to you that he fumed over it because it upset his wife Bibi Fatima (sa). Usurping of his rights, he lived with, but, now they were trying to ( did) usurp the rights of his wife and children.
Imam Ali [ra] stood up when his wife's right was being usurped but did nothing when his wife [ra] was being attacked. That is Nasb. I apologize for adding a new dimension to this discussion but please bear with me for if you are on the truth, it should not faze you.
Let us go step by step.
1. Imam Ali's [ra] Divinely Ordained right (of leadership) was violated at Saqifah.
2. Abu Bakr [ra] and the rest of the Sahabas [ra] came to attack Fatima [ra] at her house.
3. Shortly after, Fadak was usurped.
4. Fatima [ra] delivered the historic sermon of Fadak.
5. Imam Ali [ra], allegedly, swallowed his pride when his wife [ra] was being beaten and the bitter pill of having had to concede his Divine Right but spoke out only when Fadak was usurped.
I will let you tell us how you define a man who is indifferent about letting go of something although it was willed for him by Allah [swt], is a bystander (a spectator) when his wife is assaulted in front of him but then "fumes" in rage when a piece of land is at stake! That is Nasb.
But let me not get sidetracked. Fatima [ra] was allegedly attacked and as a result, she is supposed to have suffered broken ribs and had a miscarriage. Somehow, with broken ribs and having had a miscarriage, she gathered the strength to go and deliver a sermon. Her plea was for Fadak to be returned to her. Not an ounce of concern for Mohsin [ra]. And Imam Ali [ra], too, was concerned about land, not his son.
Your foundation - since it is firmly planted on lies - comes crashing even when analyzed logically without any need for reports or narrations.