random sites generally don't log carefully, or watch their logs if they do. so the risk to hacking them is low. this site almost certainly logs very aggressively. so the risk to hacking it is high.

based on differential risk, attackers will choose targets differently. they might reason that the risk/reward on this obvious trap is not worth it. but on joe shmo's php emporium, the reward is less, but so is the risk, and it might pencil out.