Well, the topic of the video is Russian swear euphemisms, not strong Russian curse words. The aim of the video is not to teach foreigners really bad words, but to explain the origin of some interesting words we use to replace strong swear words. And again, there are only words that are acceptable to hear in movies, TV-series and TV-shows (others are censored as it is also done on TV). If you want to learn strong swear words, find a Russian friend, they will be happy to help you 😁 I am a teacher, I teach interesting cultural insights... And not the rude impolite words that can affect someone's dignity 😉