Yes , the fact is that the CEX may choose not to list the coin or token after their previous claims of listing the coin at the appointed time or may not even list at all. They exploit the fact that it is done to know if the project is a serious or just another scam project.
 If you have already find yourself using it before discovering the dangers or you have no other choice then make sure you try to use a more trustworthy CEX because some are shadier than others