That is supposedly among the reasons for those 419 scams and the like to use shoddy writing and stories. You want to eliminate those that can fight back. A bit like mugging the little old lady instead of the 6'5" bodybuilder.

It also reminds me a bit of insects that evolved to be flashy to demonstrate that they are poisonous. The sort of reverse camouflage stops all but the most foolish predators from partaking.