@jonossaseuraava @mystik It's a meme made by some company. I've never met anyone that used it, I've never heard anyone talking about it except foreigners, we don't need it

We're actually a great example of how genetic similarity makes your country better. We have none of the negatives of "inbreeding" but all the positives. The negatives are barely even detectable for first-cousin, people learn that quickly, thus the app is more of a meme, second and third have no detectable negatives

>While pregnancies from sex between first cousins do carry a slightly elevated risk of birth defects, this risk is often exaggerated.[644] The risk is 5–6% (similar to that of a woman in her early 40s giving birth),[644][645] compared with a baseline risk of 3–4%.[645] The effects of inbreeding depression, while still relatively small compared to other factors (and thus difficult to control for in a scientific experiment), become more noticeable if isolated and maintained for several generations.[646]
https://en.wikipedia.org/wiki/List_of_common_misconceptions#Human_sexuality_and_reproduction

Third-cousins have the most kids because it's evolutionary the best. Even when we're very genetically close to begin with. When your kids are more similar to you, you invest in them more, when people around you are more similar, you invest in them more. Evolution 101 for people that aren't braindamaged by diversity garbage
https://www.sciencedaily.com/releases/2008/02/080207140855.htm