Why did Gregor Mendel become involved in a dispute over monastery taxes?

Gregor Mendel became involved in a long and bitter dispute over monastery taxes after he was elected abbot of the Augustinian monastery in Brünn.1

The conflict arose because Mendel refused to permit the monastery to pay new state taxes intended for a religious fund. He maintained a firm stance against the payments, as he was convinced that the tax was unconstitutional. Despite the state taking over the administration of some of the monastery’s estates and directing their profits toward the fund, Mendel continued his opposition and refused to comply with the state's demands.1