Well, in all aspects, scammers are everywhere. It's up with the person using bitcoin if they will get scammed or not. As a bitcoin investor, It is best that you know what you are doing and differentiate what's legitimate or not beforehand. In that simple way, scams can be prevented and those numbers will tone down as well.
The reason behind why a lot of people were victims of scams because of lack of knowledge in cryptocurrency and blockchain technology, that is why they can be easily be trick by scammers. Also, there are a lot of hackers nowadays that can easily steal all of your profits by just using an unsafe or untrusted wallet, that is why we should guide every crypto users and investors for them to avoid this kind of crimes.