First of all, I think people who don't like active chat on WeChat should not like active chat in real life. Most of these people are introverted and don't like to chat with others actively, which is true in life and on WeChat. Of course, in reality, not all introverts will not take the initiative to chat on WeChat, and there may be the opposite situation. Because people nowadays are often different in real life and virtual world. Maybe a person is lively and outgoing in reality, but he will be introverted and shy in the virtual world. It is also possible that a person who is very introverted in real life is a very active person on the Internet. Because people will show different personalities in different environments.
The second reason I can think of is that that person may have nothing to say on WeChat. In fact, he may not take the initiative to chat, because he has told people around him what he wants to say, and there is no need to communicate with others through this network.
Communication between people is often active. If you are always active or passive, it will be difficult to communicate. Being the active party for a long time and being the passive party occasionally need to coordinate with each other. There may be many reasons why some people don't like WeChat chat. After all, every factor may affect you, such as personality, time and other factors will have certain influence.
If a person doesn't like to chat actively on WeChat, it's not a strange question. Everyone can choose the way they like. Another is that she doesn't like to take the initiative to chat, maybe she just won't take the initiative to chat with you.