A bit odd that you say long history with Zorin but you imply that there is some connection to "Chinese community," when in fact Zorin Group is an Irish company? I have no skin in this game and never had any desire to use Zorin but I was able to look that up in about two seconds plus their website contact info says Ireland.

I'm not claiming that any specific companies are registered in China or operate from China. It's possible that because many Chinese users are using Zorin this is why their community has taken a different stance on free/open software licensing.

EDIT: Either way, my main point is that Zorin is responsible for how they redistribute the source code and other modifications to the software they sell. They refuse to do that sometimes, and they gaslight their community / the open source community.