Because every post I read until now, came from users who doesn't have 2-FA-enabled (Even Vendor Symetry didn't had - he wrote he didn't had). So, if it's that easy to prevent (nearly) all of these attempts to steal your money/account, WHY didn't you enable 2-FA for god's sake?? If that's too difficult for you, then your wrong in the DN imho.
Never had an account stolen which had 2-FA. I use 2-FA for pretty much everything from banking, facebook to email. I hear of people around me who get hacked all the time, just like on the Darknet the thing they have in common is that they do not enable 2-FA or have even heard of it.