躺平 as a movement started in China (obviously) a couple of months ago and caught fire (pun intended) on the internet forums.
Apparently, there was this jaded 26 year-old Chinese who decided to quit his mundane factory job even when he did not have much savings. He then likely spent a few months cycling around the country before settling back in his hometown. He now spends most of his time reading philosophy, earning relatively with random part-time odd jobs (like playing the role of a corpse in a show?) but has super low expenses. For example, he only eats two meals a day.
It is likely that hundreds of thousands of disillusioned Chinese youths were inspired by this sharing, which obviously worried the Chinese state. The state-controlled media then proceeded to crush the movement and even labelled it as a shameful ideology.
This then caught the attention of overseas media and eventually reached the shores of Singapore, with multiple online channels covering it. Just google....