No, no you don’t know the information or understand it. It makes sense that you’re chaffing at the label ‘denier’ because you’re under the false impression that you’re an informed skeptic.
It is absolutely no different from someone, in questioning evolution as a theory, saying, “I consider myself a skeptic: I know the information, I understand it, and it still (for me) falls short of an explanation how such complicated mechanisms as an eye could have developed by pure random chance.” You no more understand climate change than this person understands evolution.
Note further that there are great areas of controversy and knowledge-building in evolutionary theory, as in climate science. This is distinct from being a creationist or a denier, and merely proclaiming to be an informed skeptic is far from adequate to be considered one.
So being lumped in with creationists, birthers, and truthers is noisome to you because those people don’t *really *understand the issues, whereas you (mistakenly) believe that you do. Given the low reputation they have on the Board, it is understandable that you do not like being a member of that cohort.
On the other hand, the ‘denier’ moniker can imply a conscious choice to be duplicitous. It suggests that the person is aware of something, yet chooses to speak out against that thing for some other purpose, whether profit, faith, political bent, or some intangible abstraction that escapes even the speaker. It is, in this aspect, tantamount to calling someone a liar or zealously self-deluded. It is never clear whether the Stormfrnt visitor that cherry picks his evidence and twists logic to match his theory is intentionally doing so or is lying even to himself. Again, it is understandable why you would not be comfortable with the characterization.
Your umbrage is understandable. No one on a board dedicated to ‘fighting against ignorance’ wants to be lumped in with creationists, dowsers, homeopathic practitioners, scientologists, etc. And as the OP was premised on, dancing around terminology to avoid offending the crystal practitioners gives undue credence to their woo; the same is with climate change deniers. Though the terms can be used as an ad hominem (and already against the rules), the general application is appropriate.