Are some of Hong Kong's biggest artists being threatened by the Mainland propaganda machine in social media and with a formal ban of their work by the government?

Here is what Anthony Wong Chau Sang had to say about all of this:

"Speaking of starting a Hong Kong artist boycott operation, Wong Chau Sun who is currently working on location in the Mainland for the TVB series HIU HUNG responded on fb, "To the official media: if I have to betray my dignity for your bowl of rice, sorry, your bowl of rice costs too much. I cannot afford it, my entire family cannot afford it. On the other hand, for so many years I have only had your so-called bowl of rice twice, in addition they definitely did not come from you. Not to mention they were not given, I traded them with my own hard work. We are not beggars, we are art workers with a conscience. Supporting defiance is not using drugs and hiring prostitutes for 3P, it is not as dirty as what is in your brain! Save it to scare those backstabbers who are used to eating your dog food! I am a Hong Konger." Chau Sun said, "I didn't say anything about the Mainland, Hong Kong people mind Hong Kong matter. I am not minding Mainland stuff, I am following One Nation, Two Systems. This is another way to affect One Nation, Two Systems through oppression. I support Hong Kong defiance, I am not supporting Mainland defiance. If having this bowl of rice demands me to kowtow and have no dignity, this is not my profession. I make art, without dignity I would rather not eat this bowl of rice." As for the boycott against them, he said, "Oh well." "