I’ve never been a stickler for the rules as written. Old School after all, they often did not make any sense. However there is one thing I have been a stickler for, my whole life.
That is the same rules for everyone, a level playing field. You can see were in life that would make me a touch on the progressive side, but this is not about politics. It is about role playing games. Slightly different.
As I see it, to metagame a bit here, no one has a bar over their head saying “PC, handle with care”. Likewise the Big Bad has no such bar. This goes for the chod fighters, the innkeeper and so forth. The in-game universe sees no difference. The same rules of physics apply to all.
One of my favorite memes is the stormtrooper with is head in his hands. “I had friends on that Death Star.” Too often the story runs roughshod over the NPCs that at the end of the day have lives and maybe families as well. The plot might run roughshod, but the rules never should. Nor, and this is important, should it favor them.
The game rules are the laws of physics for your game. They most likely break what laws of physics we have in real life, allowing for magic or super science. As such they should not favor anyone. No one has a bar over their heads. So no metagame rules that state the big bad gets different rules. Peasant or god, the same “laws” apply.
I consider this principle the first unbreakable rule of fair game mastery. It is how a fair and evenhanded game is run.