It won't since they haven't banned crypto itself but they will only ban trader's virtual accounts made in banks if they don't surrender their anonymity. It will prevent them from having a username and a fake name and will expose their identities. It will not be bad for most of them though, and most of  those who don't want their identities exposed does not have enough holdings in crypto to cause market crash. There will only be a slight decrease in bitcoin's price after this even if many FUDs are due to come out.