Many hacker and scamer involved in bitcoin currency. Bitcoin is digital currency so many people don't know about bitcoin. Bitcoin is high risky because it price can be high increase and decrease in a day.
There was some things you mention are those people are avoiding bitcoin just like you said a scammer and hacker hearing some negative about bitcoin probably are true so they are put in their mind could be bitcoin was not a good to invest or using it. But the truth is bitcoin was a trusted in cryptocurrency and the one to blame saying negative about bitcoin are those people trying doing bad names in crypto.