They continue to belittle their opponents as a loose confederation of basement-dwelling loners who exist solely on The Internet. I'm sure this form of disparagement plays well with like-minded people who take comfort in belittling things they don't understand (anyone more than 5 years younger than them; The Internet; bitcoin exchange rates; bronies*).

[*TBH, I don't really understand the last two either. But I have yet to attack them purely out of naivete.]

Mike Rogers, best friend to intelligence agencies everywhere, has done this on more than one occasion. The first one he fired off during his impassioned defense of the indefensible CISPA bill, in which he referred to opponents of the bill (including the ACLU and EFF) as "14-year-olds in their basement clicking around on the internet."