Age of consent is inherently a different issue than cousin marriage. You know, because of the whole consent thing which is right there in the term.

I don't fuck my cousin and I have no desire to, but I also have no problem with people who do, so long as it's consensual. I'd say the dweebs here are the ones who can't see past their own bias, a bias which apparently exists mostly due to the same eugenicist bullshit they rightly despise.