Each person chooses what he wants and to what extent he is willing to take risks. Cryptocurrency exchanges I like to compare with bookmakers, which are also very much and regularly create new ones. There are more risky, but on such exchanges you can earn more and faster. There are also more secure and guaranteed exchanges, but such earn, as a rule, not so fast. And users are everywhere. The offer of any service or service exists when there is a corresponding demand. Therefore, in my understanding it is not necessary to decide for everyone. It is enough to decide for myself what is really important to me and work as I feel comfortable.