No the point is women who say that to men ("if you only wanted sex, you should have said so") are saying this to men they already know and have had a history with, which can be short from a few hours to a few years. They're using hindsight anyway. You men are taking it too literally. I a woman tells you this she doesn't mean you literally should have asked her sex to begin with. She's actually making a comment on the relationship
Women do not want strange men they have never seen or haven't had time to get interested in coming up to them in public while alone to say, "I want to fukk you". The only thing this video proves is you shouldn't go up to strangers and say that. Saying that to a girl you met on tinder or at a club after a few dances is a different situation. This video is using a straw man argument and doesn't transfer to all situations with women.