Bitcoins anonymous transaction is the major cause of crime related to bitcoins.
bitcoin transactions are not anonymous.
and this has nothing to do with it either.
most of the times it is all about idiocy of people. for example the idiot who wanted to sell his bitcoin off the market and made an arrangement with a random shady person on the Internet whom he met in a secluded place where the perp guides him towards an alley with their car parked when they rob him has nothing to do with bitcoin! he might have been doing any other trade this way and gotten robbed the same way.
I agree with you on this. The trade could be illegal in the first place.
We should be very careful in dealing with strangers online.
We don't know everybody's motives and scumbags are just lurking everywhere.
These people who have malicious intents are really doing their very best
to persuade someone and become their victim.
We all should be vigilant in these kinds of illegal transactions to stop
these criminals from endangering other people's lives not only to those who are
holding bitcoins but also to the innocent people who are still planning to engage
themselves into crypto space.