Old rules and lore = no moral dilemma. Kill monsters because they're monsters. No guilt. Monster = evil. Slaughter them all. Orcs, trolls, goblins, vampires... All bad. No question.
New rules and lore = um...should I kill the illithid tadpole in my head turning me into a vicious, vile murderous monster who wants to enslave everyone? What if I become a good mind flayer like Omeluum and wind up helping people. And what really IS good anyway? I mean, maybe the entire Multiverse would be better off if mind controlled by illithids. After all, no more crime. Right? They'd bring law and order to everything. And are goblins REALLY bad? They just viciously murder and eat whole villages of people, but hey, they're a race that needs to survive too. They're not bad. They just breed like crazy and have to kill and eat everything to survive. So maybe we should just let them be because they they aren't inherently evil. Just misunderstood.
Another problem with the new way of doing things is that nothing is consistent anymore. I played D&D for a long time so I come to the game table thinking they are all evil. No questions asked. New player comes to the table and believes that goblins are just a race who are misunderstood and they are neither good nor evil. So it becomes an issue, we argue back and forth just like in this thread, fighting about whether they are actually good or evil.
And yes. Same.
Child raised by Bhaal cultist. Must murder people to be accepted. Child raised in goblin society. Must murder and eat people to be accepted.
Hmmm. Actually, Bhaal cultists might be less evil. At least they aren't eating people.
Oh, and they might murder evil people, this making the world slightly better. After all, he is God of Murder, so when someone assassinates an evil villain, they are still operating in Bhaal's realm. Good assassins are still murderers, they're just killing bad people.