DENIER, in this context, refers to those who deny anthropogenic global warming, despite the overwhelming CONSENSUS among active climate scientists and scientists in general that it is a valid description of the current behavior of the Earth's climate sytem.
Cult:
1.
a particular system of religious worship, especially with reference to its rites and ceremonies.
2.
an instance of great veneration of a person, ideal, or thing, especially as manifested by a body of admirers: the physical fitness cult.
3.
the object of such devotion.
4.
a group or sect bound together by veneration of the same thing, person, ideal, etc.
5.
Sociology. a group having a sacred ideology and a set of rites centering around their sacred symbols.
6.
a religion or sect considered to be false, unorthodox, or extremist, with members
often living outside of conventional society under the direction of a charismatic leader.
7.
the members of such a religion or sect.
Given these definitions for cult, Frank, please explain how you understand the terms denier and consensus to be "cultish".