The new name better describes the phenomenon. The predicted changes encompass our climate, not just temperature. Precipitation, humidity, ocean temperatures, etc. are all predicted to change.
Any time money is being spent on anything, there is someone who will gain. Weapons manufacturers benefit from war, does that mean that US weapons manufacturers are aiding the Taliban to prolong the Afghanistan war? I highly doubt it. If you don't like someone, does it mean you will kill them? Motives don't prove actions. Skepticism is good. And to be sure, scientists are imperfect humans capable of greed and lies just like the rest of us. However, the average scientist is an honest hard working idealist that has a drive for the pursuit of knowledge, regardless of any possible implications for future pay checks. While we're on that topic, if a scientist discovered convincing evidence that AGW doesn't exist, that scientist and the publishing journal would certainly become instantly renowned and benefit tremendously. Finally, I would like to see a single person cite something showing this windfall in research funding that the scientific community has received as a result of AGW. Obviously money is going to research AGW now, but if not there, I would think it would be earmarked for other research projects anyways.
As far as politicians... I would always take anything they say with a grain of salt. They are prone to support something whether they agree with it or not as long as it benefits whatever their political agenda may be - though most politicians don't have an evil empire agenda as people here may have you believe.