It’s confusing, right? And there is not much info about it in the internet. Even on the official website.
I think it’s really meant for people who are setting up a business in Taiwan. Like what shen_shung described. Also based on Bimmerjeff’s experience on the other thread. Although they will probably ok putting the money in an investment fund from a local bank. And even then doesn’t seem to be that straightforward, and you need a local CPA help setting up the bank accounts, etc.