as the Rule says, you are not allowed to lure bosses / guards to market areas, this are areas where people leave their alts (or not) as shops to make some income.
ofc it depends on the person about luring the bosses into unpoppulated cities, i see no harm in that...
also the Guardian Scroll's are kinda free, so if someone dies cuz they were afk on a remoted city/village, they won'0t lose anything.