Title of acarya
Sri Caitanya-caritamrta
CC Madhya-lila
Śrīla Advaita Ācārya was given the title of ācārya because He spread the bhakti cult, not the philosophy of monism
CC Madhya 12.194, Purport: Absolute knowledge consists of Brahman, Paramatma and Bhagavan. This conclusion is not the same as that of the monists. Srila Advaita Acarya was given the title of acarya because He spread the bhakti cult, not the philosophy of monism. The true conclusion of advaita-siddhanta, expressed at the very beginning of the Caitanya-caritamrta (Adi 1.3), is not the same as the philosophy of the monists. Here advaita-siddhanta means advaya-jnana, or oneness in variety. Actually Srila Nityananda Prabhu was praising Srila Advaita Acarya through friendly mock fighting. He was giving the Vaisnava conclusion in terms of the Bhagavatam's conclusive words, vadanti tat tattva-vidah. This is also the conclusion of a mantra in the Chandogya Upanisad, ekam evadvitiyam.