I am not surprised. Charlatans who claim to dismiss "ideological environmentalism" but end up contesting established science often react that way when confronted. In this video (some kind of torture to listen to ;-), he claims that global warming is a hypothesis and the embodiment of environmental ideology so he is clearly a primary denier of climate change.

Loosing their temper when challenged seems to be a standard trait for RWAs.  

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre