You're attacking a straw man here. I never said they shouldn't be allowed to do research. I just questioned whether all this research is always a good thing like you claimed. I'm saying that it's not.
For now, China seems satisfied to get scientific prestige measured by how much they publish. But it's not stopping there. All this research is to get an edge on the rest of the world, not for the good of the international community or science or whatever. Once they have the edge, are they going to use it benevolently? Either to the world or to their own citizens? I highly doubt it.
In my view, this large recent increase in research has as good a chance of being a bad thing as it is a good thing.