It was just a passing comparison. He didn't mean to offend or disparage anyone, chill out.
Its the same thing as saying, "the 800 pound guerrilla." Sure, most guerrillas are nowhere near 800 pounds and may take offence to us calling them heavy. But thats not the point at all.
I've never heard (or rather, read) anyone using the term "800 pound guerilla".
But now you've inspired me to look it up, and apparently the average male gorilla is in the 300-400 lb range, but obese gorillas in captivity have got up to the 600 lb range. The heaviest gorilla on record was N'Gagi from San Diego Zoo, who died in 1944 and weighed in at 638 lb. So an 800 lb gorilla is certainly the weight range of any observed gorilla, though I assume a really overfed gorilla could easily reach 800lb since even humans can do so (http://www.dimensionsmagazine.com/dimtext/kjn/people/heavies...)
Its the same thing as saying, "the 800 pound guerrilla." Sure, most guerrillas are nowhere near 800 pounds and may take offence to us calling them heavy. But thats not the point at all.