Billionaire Miles Guo is an anti-CCP dissident. His website Gnews.org, is the only site I've come across with elicit Hunter Biden footage. I have no idea how/why he has that material, but I think if he sees an opportunity to undermine the CCP's public image by linking them to a corrupt drugged-out American "Princeling", he would capitalize on it.

https://en.wikipedia.org/wiki/Guo_Wengui#GNews

It's also the only site where I've seen the "BGY Program" mentioned. https://gnews.org/51672/