No matter if it's misinformation or disinformation, it's all part of their grey-zone tactics. It is also a part of their cognitive warfare. The purpose is, really, to penetrate our society and plant the seed for disharmony. Sometimes it's very effective, especially in election times. This is when you need to choose someone. It can be used as a strategy for affecting Taiwan's presidential election.
Taiwan has been facing this kind of situation for years. Our society has become much more mature in recent years and knows how to deal with this. To be honest, I don't think Chinese cognitive warfare is reaping the benefit that it expected to get.