Bill Zebub
“It’s probably Matt Mercer’s fault.”
Where did automatically come into this? It is true that the DMG specifically endorses a DM in deciding if something succeeds, fails, or needs a roll of some kind.
We've gone through that: the play loop defines the step where possible automatic success/failure is determined. If we're extrapolating the play loop to apply to NPC actions, we can't just magically wish that step away. So, in the case of an NPC influencing a PC:
- If the DM makes that determination, then they essentially have complete authority over PC thoughts/feelings/actions, whenever they choose, just by making an NPC influence them
- If the player makes that determination, then any following roll is tacitly with the player's consent, and I have nothing to say about it.