yes you are right, it is not entirely a bitcoin error but also the bitcoin user itself.
bitcoin is just a tool, one example kitchen knife. even a kitchen knife can be used to kill the person depending on who uses the knife that's, depending on the person using it
For me, it might be depend on how the people used this cryptocurrencies. It could be possibly yes if one could gonna be used it in bad ways and it might be not killed people if they would be used it in the right ways or in other words it relies on the hand of the people.