Freedom of expression in action
There are many political movements with ideas despicable to me (anti-gay rights views are among them), but they have a right to say it out loud. In fact, I had rather they say it out loud, so I know what they are thinking, rather than having them scheme in the dark. In a democracy every political opinion may be expressed, and you may join or support every political party. At the same time you may be held accountable for your expressions, and if you step beyond the boundaries set by law, you may get punished. Furthermore, if you express opinions held in contempt by others, do not be surprised if they in their turn voice their contempt. It is their right.
Thus, Eich is perfectly allowed to support a political cause, OkCupid is perfectly entitled to protest, and we can hold both sides in contempt (or not) for different reasons. All part of democracy (nobody said it was going to be nice).
I still think the message of "love promoting" OkCupid comically full of bile, hence my smile.