It's a common joke among the cannon fodder conscripted serving their mandatory service that the winning move is to just surrender and join the winning team when the PLA lands.

a group of retired Taiwanese naval officers told them to stop preparing for war

https://en.wikipedia.org/wiki/Kao_An-kuo

In 2021, Kao reportedly made a YouTube video in which he called the Taiwanese military to overthrow the Democratic Progressive Party (DPP) leadership and surrender to China.

Kao's group also allegedly used drones to carry out surveillance exercises over military training operations and equipment, sending their results to the Chinese government.