Look how Justine Bieber dropped off the radar over the years you know even the teenagers will come to their senses after grown up. The current gen teens all witness how China treated HongKong(almost 10 years) and how they deal with covid(<5 years), then more recently how they deal with the flood. They probably have to bank on future teenagers, like no fuck up or political attacks against Taiwanese for another 10 years then they can try again.
Honestly economical assimilation/control might be a easier way.