What evidence would convince you that your understanding of Prabhupāda and Gaudiya Vaishnavism might be wrong?
I personally said: The lack of credible existence of lord Chaitanya outside of the Gaudiya scriptures also the esoteric deep teachings of internal sexual tantra that’s taught in Gaudiya philosophy at later stages. Aswell as its epistemic and inconsistent worldview with natural law, revealed science, and revealed truth within the Biblical paradigm which has documented historical attestment.