How do you think that couriers have to pay attention to the official WeChat account when they don't send text messages?

In fact, I am very opposed to this practice. If we pay attention to the official WeChat account, it means that our personal information may be exposed. Besides, it's a waste of time. Sometimes, the customer service of the official WeChat account is not there. I wanted to consult the courier, but no one came out to answer for a long time. It is better to send a text message and get the express directly, and sometimes some people don't like to read WeChat, so they miss the time to get the express. However, there will be SMS reminders when SMS comes, so I strongly disapprove of paying attention to the official WeChat account.