That statement seems reasonable. But in my neck of the woods, there have been quite a few CL-related robberies recently. Quite a few. I don't recall anything like that going on back in the old days of newspaper classified ads.
I might be wrong (I often am), but my working theory is that a certain element sees CL in particular as a hunting ground.
Some police departments here open up their lobby for Craiglist deal meet-ups.
That suggestion alone would weed out potential problems