Crimson Longinus
Legend
There is no loss of agency in either case as in either case the characters had no ogre-related agency to begin with.No. It's about the GM improvising the encounter on the spot.
Think about it this way. The GM for some reason decides to roll a random encounter before the session. He rolls a 4. He doesn't even check what that encounter is. He just rights down a 4. It so happens that 4 means an Ogre. So long as the players go somewhere and trigger a random encounter they will meet an ogre.
There is no loss of agency. The random encounter table is a part of the game and it was rolled fairly.