It's the popularity of Bitcoin being a decentralized currency and anonymous that makes it a vehicle for people to scam guillible investors, and yes it's not the fault of Bitcoin but people with criminal minds who uses Bitcoin as a tool to scam people.
I'm 100% agree with your saying.Its not fault of bitcoin.Like a knife you can use it different purposes and you can even kill from that.User decide how to use that.You can cut vegetables,fruits or man.In the court do we blame the knife if someone killed using knife? Killer is not the knife.Killer is who who use knife to kill.Do we suspend all knifes? Think again.It same comes to bitcoin.Same theory.I wonder why most people don't understand this and blame the bitcoin.