First, the history of lucky money
In fact, the history of lucky money is like this: in ancient times, in order to suppress evil spirits, elders would give lucky money to their younger generations to wish their children grow up safely. In the past, the younger generation needed to kowtow to the elders when they received the lucky money from the elders, which was a sign of respect for the elders. But now there is no such habit in more and more places. It is common for the younger generation to bow, kneel or take it directly with their hands when they take the lucky money. Maybe for some families with strict family education, they need to kowtow to get the lucky money.
Second, there is no need
I don't think it's necessary to kowtow in order to get a red envelope. It's not that this custom is bad, but because with the development of modern people's open consciousness, everyone thinks that kowtowing can be replaced by other behaviors, such as bowing, because kowtowing to others is an act that hurts self-esteem. Although it is kowtowing to one's elders, it is still not conducive to children's psychology. There are many ways to show respect to elders, and we can choose other ways to receive red envelopes. Modern people are open-minded, don't continue to be bound by traditional behaviors, and the customs in each family or in the north and south are slightly different, so we can live with them.