Because Lord Caitanya was an incarnation of God in fact, foolish fanatics have proclaimed so many so-called incarnations of God in this age without referring to authentic scriptures. But Sārvabhauma Bhaṭṭācārya or Gopīnātha Ācārya did not indulge in such foolish sentimentalism; on the contrary, both of them tried to establish or reject His divinity on the strength of authentic śāstras.
On the contrary (BG and SB)
Bhagavad-gita As It Is
BG Chapters 7 - 12
BG 7.12, Translation:
Know that all states of being—be they of goodness, passion or ignorance—are manifested by My energy. I am, in one sense, everything, but I am independent. I am not under the modes of material nature, for they, on the contrary, are within Me.
Srimad-Bhagavatam
SB Preface and Introduction
SB Canto 1
SB 1.1.16, Purport:
The leaders of the people are very much anxious to live in peace and friendship, but they have no information of the simple method of hearing the glories of the Lord. On the contrary, such leaders are opposed to the propagation of the glories of the Lord. In other words, the foolish leaders want to completely deny the existence of the Lord. In the name of secular state, such leaders are enacting various plans every year. But by the insurmountable intricacies of the material nature of the Lord, all these plans for progress are being constantly frustrated.