http://encyclopedia2.thefreedictionary.com/enthusiast
"A person who enjoys using computers and electronic equipment. Enthusiasts like technology and are willing to learn more of the ins and outs of a product than the average consumer, who just wants to use it. An enthusiast is more like a "prosumer."
-by that definition you're not an enthusiast and are no different from someone who buys a Mac.
Enthusiasts, in the context of this community, usually overclocks, but that's just semantics, who cares since there are so many differing opinions. But overclocking these cards are not dumb, just because you don't agree doesn't mean it's dumb. I don't climb mountains or do extreme sports, but I don't call people who do dumb, and they're actually risking their lives. They push the limits and show what we can achieve.