Except we don't really have any agency in this story, we get to design the appearance of our character and get some limited (that we didn't even start out with) dialogue options to try and set the tone of our WoL ranging from utterly meaningless to negligible. We are a set protagonist with a tiny amount of wiggle room, this isn't a RPG where we can alter the story, side with the bad guys, set off a nuke in the starting town, or get our whole party killed because we failed to do all the side quests. We are free to head cannon our WoL's as much as we want, but if in 5.55 we sudden marry Y'shtola, then we're all marrying Y'shtola, we don't get a choice, we're still just along for our WoL's ride like you could rename Cloud in 7, call him Sam, he was still Cloud and would act and do as Cloud would.
In the Cave scene with G'raha you actually do have an option to request he keep things professional and on track, causing him to come out, say sorry and move on, nothing else changes though and it all plays out the same, because the choices are just flavor, you can chose to not remember the meeting, indulge and play back at him, or ask him to stay on task, it all leads to the same "thank you for bringing me here" and the plot moves on. Because my WoL is the same as your WoL is the same as everyone elses outside of appearance and our own head canons.
We as players can love every Scion, or hate them all, our WoL likes them all, we can't tell G'raha to back off because our WoL doesn't want to and we're only given options that stay in line with the character they want the WoL to be.