Earlier quoted context omitted.
I must have missed the sarcasm. Plenty of people mistakenly believe that online dating is still used mainly by nerds. It was true at one point in time. Edit: I find it strange that you deleted your previous comment after you wrote a reply to my comment, which said you've enjoyed using OkCupid for 8 years. That comment was part of what prompted me to respond initially, and why I didn't think it was sarcasm.
Original comment doesn't state that online dating is used mainly by nerds, but that nerds mainly use online dating.
The only exception would be people in relationships or marriages. Unfortunately, even that is becoming questionable: look at Ashley Madison and its nearly 2 million uniques per month.