Past / Home: Going on a quest
Present: Going on a quest that's tweaked to Arishiko's preferences
Did Ari use her admin powers to her team's advantage? While heavily tempted, she did not do so. But her changes made the experience something other than what the quest had originally allowed. When a team usually goes through a quest, their focus is on making it through the quest. Here we have Ari changing the rules of the quest (to make it more "fun"), behavior that simply does not belong in regular quest play; finishing a quest isn't about seeing how hard you can make it and still win, but simply finishing the quest. Arishiko wants to set up epic battles that push her and her party to the limit, but that's not how the game normally works.
Again the backdrop of how he normally plays, Denki can feel these differences. Ari wants something different from the game now, and even if the gang was to play a quest without any manipulations, Denki knows playing this way (like "in the old days") isn't want Ari wants at this point. Even if Ari *could* go back to just enjoying existing quests for what they are, it's not what she wants at the present, and her future reasons would likely be different than for why she did it in the past (when she was unshaped by her more recent experiences).
Or something like that.