This happens regularly in western europe, especially by pediatricians. The charitable interpretation is that the doctor knows the child will get better in a few days anyway, but has to give _something_ to soothe the parents. Giving the substance-free stuff is better than unnecessarily medicating the child, and placebo-effect can also play a positive role.
In China there is some historical reason for it - Mao needed something to placate the peasants while trying to figure out how to provide healthcare to rural areas[0]. Unfortunately the government is still trying to figure that out.
I don't know what the history is in Germany that caused it to be the way it is.
[0] https://respectfulinsolence.com/2019/05/29/mao-triumphant/
Today, lobbying powers of a profitable industry also play into it.
Here in Belgium all the doctors that have seen my kids have no problem saying paracetamol and they'll be fine in a few days.
W-Europe is particularly hostile to medical quackery IMHO.
Kids can get high fevers really fast and you just want to make sure their lungs & heart are ok, they don't have a throat / ear infection etc. A doc can verify that for you in 5 min so I rather be safe than sorry, an "OK" is all I need.
In the USA or China?