It is much easier for someone to blame others for their misfortunes than it is to accept their own greed and ignorance as the real cause.
What do you achieve with this mindset? Nothing. Fraud must be acknowledged for there to be any improvement on anything.
I acknowledge that there has been a lot of fraud in the crypto space. I have lost hundreds of bitcoins to fraud (when they were worth much less). Educating people about fraud is important.
Now, I ask you. What do you achieve by your witch hunt?