Most of the things I've seen coming out of the different countries are not actually copies, but are vessels made in the spirit of Murano. The best Venetian-inspired glass, IMO, is from the USA. Glassmakers of the USA often emulate Venetian and Bohemian glass. Their wares bring excellent prices, so others must agree with my thoughts. I wish I could buy a lot more from the USA, but my wallet is too thin to buy the best.
In defense of China -- much of their work is excellent. Many of their animal figurines are very good. Some of their vases are well made and worthy of respect. For people who are buying to enjoy, I think the better Chinese pieces are very good buys.
I just thought of Japanese glass master Yoichi Ohira, who makes Murano glass. I don't think that any of us can deny that he is one of the greatest contemporary maestros. Probably most of us cannot afford his work. Should we call him Japanese or Muranese? It doesn't really matter, because his glass rises above such simple categorization. It would be good if all glass was considered this way. It would probably be terrible to be a glass master in China, only to have people scoff at your work because of the country.