hey! well, that's massive spoilers (also, death of the author applies if anyone wishes to interpret it differently) but what our writer meant by this is:
spoilers below
Yes, Theo never explicitly prayed to Acoite. The reason Theo summoned Acoite in the first place was his own trial by the Divine Order: as a candidate for the god of clarity, he needed to prove that he's not... influenced by cognitive biases. So, he never acts on the desire of keeping desiring and on the yearning for something that was never real in the first place; that's why the player can fail his ascension requirements by explicitly using Acoite's powers on his mind and mess up with his mind and perception.
A small detail but you can notice Theo's not influenced by nostalgia when Acoite asks him what he'd like to do or what are his favorite places - even though he loves France, his home country, and old videogames, he wants to travel to East Asia and he quickly finds new favorite places across town, too.
That's why the True End is this: their relationship properly works if they like each other as individuals, and can't influence each other using divine powers (because otherwise..... there's some unspoken power imbalance, y'know!).
(fun fact, it's never said in-text but I thought the events of the game happen... in some fictional version of Seattle).
hope that satisfies your curiousity!