The BTC are lost, and it may be very difficult or impossible to recover them. Wouldn't you call that a risk associated with trading BTC?
You know, sometimes I wonder if a poster's request for "support" of a "claim" is genuine, or if they're playing games. I have a hard time believing that someone who's either followed this thread over time or that has had any interest in Bitcoin would be ignorant of this issue.
The thing, of course, is that if you call these posters' bluff, they'll just pretend that you can't support your claim. it's a nice trick that allows them to perpetually deny evidence presented, and which shows that dishonesty is a lot easier than honesty.
Now, you can argue as I have that this is mostly their own fault, but it's risk that you normally don't run with a bank account with actual money in it.