[Hindu] zamindars as the chief mediator between the court and the village.... the Mughals attempted to co-opt the zamindars into the mansabdari system..
To me it all looks they did it for their personal gain, some Hindus were willing to sell out on their Dharma, no more. Secondly the figure of 143 mansabdars in Aurangzebs court simply means that there weren't enought educated Muslims to do the administrative work of the ever expanding empire and Aurangzebs clever use of bribing the Hindu rajas with official titles. It doesn't in any way detract from his zealotry.