I can't speak for billvon but the term denier is quite accurate as a descriptor of those who ignore the empirical evidence, the science and the reality of the situation that is around them and actively seek to undermine legitimate science for an agenda known only to them, or in support of a faith/belief that is against modern science.Why is it that you keep using the word "denier"?
Does it advance an understanding of the science?
Does it serve any other purpose than polarization and obfuscation?
Does it advance the understanding? maybe not understanding of the science BEHIND the warming... BUT it allows people to comprehend with one short term exactly where a person stands in regard to scientific pronouncements of global warming.
A "denier" is someone who ignores the facts in order to promote a self-belief, a known fallacy, or a position that is not supported by science or scientific facts, and therefore it DOES actually advance understanding!
It advances the understanding of the polarized position of the individual in question as well as assigns the individual so labeled to a group of people who's articulation is designed to obfuscate reality and undermine the scientific truth of the situation which is proven or shown (however you wish to address it) with empirical data.
Simply put: it is a term included into the modern lexicon of climate science or common slang that provides a short, concise word that allows the person hearing it to comprehend a series of things, which serves communication between people.
A person who will deny the scientific evidence should be proud of the term: the only reason to feel slighted by the term is the individual awareness realising that he/she/it knows the evidence to be true but then CHOOSES to act for the sake of ignorance and hindrance (or, again, obfuscation), which then not only sows FUD but also serves an agenda which is NOT empirical OR scientific...
There is NO obfuscation in the term "denier". It is perfectly concise, descriptive and well earned.