Why is "Crushing Old Men" so popular in China?

Brother Cat also looked into this matter. The so-called "crushing old men" refers to young girls, say women around 20 years old, who specifically target men in their 30s, 40s, or even over 50.
They don't actually get involved with them!
They just provide some emotional value, like acting spoiled and coquettish,
calling them "brother," "handsome," and so on.
Then they ask those men for red packets, like asking them to buy a milk tea, a movie ticket, or treat them to some snacks, once for ten or twenty yuan.
In short, it's trivial small money, but it's said that some girls add many people, and in one day they can get red packets from dozens of people, so they can receive hundreds or even thousands of yuan a day.
What do you think about this?