And what causes that exactly, in your experience?
When they are pressured by their environment, to do stuff like this.
1.Family pressure to do this, they don't enjoy it but pretending to because of family pressure
2.They are vain people who do things for peoples praise and attention, they are insecure and need validation from other people, caused by various experiences in their own lives and not dealing with them, they put on a image to please people
3.They are as you said, over compensating for lack of this stuff in the bedroom, but it is more deeper than that, they probably are not experiencing deep emotional connection with each other, they have a void in their lives and their hearts, because of this, they purport this image of happiness and intimacy in order to ofset this feeling of a dead relationship. You see, when you really love something, in a relationship, women like to keep these deep intimate moments in private, between the man and the women, when a man and women do not have these deep moments in private, it of course is of no value to them, they will show acts of intimacy in public due to the fact they have none in private. Being vulnerable and showing love to a person in private is what most people do, when they publicize this it shows they have no desire to actually keep this between them and their spouse, they don't have this deep sense to keep it between us two, it is something innate in us, that I can't explain. the same way a man, who loves his women, will be over protective of her, a man who is convinced to be a dayuuth, instantly loses more love for his women, and he loses more love for himself, he decreases in honor becomes more insecure and the relationship starts to fail as he cares less about his spouse doing what she wants and dressing how she likes in public, Essentially he values her less, and therefore allows her to be shown in public without any shame.
This topic should be more discussed as nowadays we an increase in these type of cuckhold men.
4.Culture, they believed what other people said online, they saw clips of other people doing it, the continued to follow suit, and do what they saw other people doing, and just thought it would make them happy or be a good thing to do, they didn't think about what they were doing and it is more of an innocent act