Boys are so much more cuddly and fun
No, they aren’t. Some children are cuddly and fun, some aren’t. Nothng to do with their penises.
It is exactly this type of gender stereotyping that the o/p means. Girls are “easier”, better behaved, more responsible, more mature, more sociable. You can go shopping and get your nails done together. Then they get married and naturally they want their mums when they have their own babies.
Whereas boys are just like labradors, feed them, exercise them, and provide affection. Then they sniff a girl and off they go. And of course because girls stick close to their mums he’ll be more involved with her family.
It’s stereotyping at it’s worst. And self fulfilling. If you spend time with your dd doing “girly” shit, but assume your ds won’t be interested and leave him to his xbox, of course you won’t be as close.