One reads about late medieval debates in which one side would cite Puranic material. Are there instances when the opponents called it "Tamasic" to refute it?
Sri Appayya Dikshita writes in his book, Sivatattvaviveka
We are not very much worried about whether it is Vishnu or Siva who is the supreme deity spoken of by the Upanishads because we follow Advaita. But it is impossible for one like me to keep quiet when men with perverted minds proclaim in abusive language their hatred toward Siva by calling these puranas as tamasic — a hatred which consumes their hearts like flames. I have refuted these people but this does not mean that I am not a devotee of Vishnu