This may have been true 12 years ago, but years later OkCupid added "last active", which was a search criteria to weed out old profiles. At least, was there in 2015 when I met my current partner.
The gist of the article seems to be combining two different things: why you should pay for online dating, and false advertising. I don't think the OP joins those arguments very well. Plus, again, this was 12 years ago. I think today OKC might be guilty of the same thing they are pointing fingers at back then.
OKC was bought by Match - they were no longer the same company after being acquired as they were before. All these articles were written before they were acquired.
The gist of the article seems to be combining two different things: why you should pay for online dating, and false advertising. I don't think the OP joins those arguments very well. Plus, again, this was 12 years ago. I think today OKC might be guilty of the same thing they are pointing fingers at back then.