To make the most facile counterpoint - the reason the Skyrim blacksmith doesn't care if the main character slays dragons is because they weren't programmed to. There aren't consequences either way. To the extent that this post is meant to be inspiring, it only works if you're an NPC in a static world that has no real consequences - where you actually can live your life in a static loop because nothing will change. Wh…
I think when people use NPC as an insult (it is a dumb insult in my opinion), they are looking at it from the point of view of a player, someone outside the game who understands that the NPC is scripted (this is a silly and egotistical way of looking at the world). This post is looking from it from the point of view of the NPC instead, as if that was a living entity one could be.
The blacksmith tasks the protagonist to get a Dragon's Teeth or whatever and pay 100 Golds in return(never played TES, sorry if this isn't a good example). The player has no control over the blacksmith; the blacksmith is in full control of the situation. The blacksmith is an NPC. The protagonist is the player. But then some thinks the blacksmith must be the player, I suppose. The fact that this sometimes seem to happen almost puzzles me.