Not regulated and nearly impossible to trace the actual owner of a account, its easy for internet scammers to communicate with their victims anonymously and for free with the app
Especially when dealing with something like BITCOIN it becomes very desirable for the app to be used and is very common around here too.
I agree with your opinion, in fact they can change their username, they can change their name to the name of the admin of particular projects, some of them are pretending to be the dev of a certain popular project asking you to send to their wallet if you want to invest, because their hot wallet is not working.