I agree, but it's nice to have something real to filter on to save yourself from having to be in the room with the other person in the first place. I don't know if I'm angry, so much as concerned that tactics like these will spread and further erode the OkCupid data set essentially making it less useful for everybody.
There is nothing particularly deep about the OkCupid data set. It is a representation of one slice, one instance, of culture. At most, it shows how a certain subset of people represent themselves to potential dates.
And, on that note, exploiting the game has a strong tradition elsewhere too. Expecting that the data set is not already corrupted beyond recognition by people trying to manipulate their data to get ahead is silly.