Call me crazy, but I think climate scientists can enumerate major carbon sources and sinks. Unfortunately your comment is so vague that I can't tell if you're referring to a specific thing some person said or if you're just imagining a guy to be mad at.

> cannot enumerate the major sources/sinks of carbon on the planet

What climate scientist can't do this? Are you talking about non-scientists calling people "science deniers"? Or are you denying that climate scientists have been able to do this, in which case yes you are literally a science-denier?

Nonetheless, you can't excuse harming the future of the entire nation because somebody had their feelings hurt. The stakes are bigger, here.

The vast majority of carbon sources and sinks can be attributed. Even the sinks are probably 80+% attributed at this point despite being more difficult to identify via remote sensing.