I agree with you, UltimaGriever. There's just not enough words to adequately describe the utter frustration we feel towards the astonishingly negative reception of FFX-2.5. I always imagined Yuna and Tidus would have those kind of arguments, based on their different priorities and values growing up. I liked it actually, because it revealed Yuna's true feelings about post-Sin Church and what she wants to do about it. I mean, really stop to think about this:
Yuna disassembled Vegnagun (with the help of her friends, again). She put Shuyin to rest. She saved a friend from the clutches of a psychopathic Unsent. Things were different this time around. She didn't have to lose friends in order to win. She saved them. Then she ran into Bahamut, who made a ridiculously vague offer disguised as a rhetorical question: "Do you want a moment to walk with him again?" /something to that effect, and she said yes because who wouldn't? Wishful thinking. Yuna bids goodbye to her new friends and decides to go home, leaving the Gullwings (without seriously considering she may actually seeing Tidus again). We know from Last Mission, that all she does is babysit Vidina and feel wistful watching her best friends be a happy, little family. In the three months since the game ended. And in the novel, her argument with Tidus heavily implied she had been planning to restore the idle clergy, or at least answer the old folk's concern.
Reuniting with Tidus had more repercussions than we thought, because that changes Yuna's priorities entirely.
I think we've severely underestimated the internal conflicts Yuna struggles with. Yuna's the type of character whose wants and needs are always in conflict, ever since FFX. Not downplaying the importance of Tidus/Yuna or anything, but I'm thinking about Yuna as an individual and how her world keeps constantly changing, for better or for worse. Yuna post-FFX-2 has such fascinating, potential issues that are never seen in plain sight, but they're always there, just bubbling beneath the surface of her smile.