Problem is there's no fixed growth for Inquisitor as he's not a fixed character - but they can grow or devolve on multiple levels throughout playthrough. They can be prejudiced against magic and spirits at the start, only to change their position on it. They can hate the Chantry, but grow to accept it or love it and grow disillusioned with it. They can be proud Dalish who'd be humbled by what was revealed about ancient elven past. They can become more accepting of people of different backgrounds, despite voicing strong opinions on them earlier. They can grow along the companions and help them in return for their companionship and valuable lessons they've offered. Etc, etc. It really depends on how people play it, but the options to at least express their position or their change are there - it's not just in our heads.
Only through dialog choices, but I don't recall that picking any of those choices actually changed anything in-game. I don't recall anyone's opinion of you changes because of you choosing those options. Maybe I just can't recall any.
Does anyone mention how you hate or love the Chantry and if your Inquisitor has a change of heart, does anyone comment on it or does anything change because of it? Are there any dialog changes that represents this change? Is there any other change except for the choice of the already static dialog choices? Can you give an example? I am being serious about it---not baiting, I promise. I am asking because I very well could be wrong.
As far as I remember, however, there isn't any change except for what you choose to pick in dialog options. Not saying that Geralt has such change it's any of the things I mention, as I don't remember any game changes for him either, except that if you choose to play him fair, honest and reasonable--people will comment on such. You'll go into to towns and they'll either run into their homes and lock the door (if you're a violent, greedy, butthole) or greet you warmly and some even "hail" you. Some also mention that some people think Witchers are buttholes, but you aren't like that. Does anything like that happen in Inquisition? Whether you play a jerk or not, people are pretty happy with you, aren't they? (Again, could be wrong on that count)
I am a kind, generous Geralt and killed someone that I didn't have to and twice already I have been called out on it. Once in pretty embarrassing way. This wasn't an important NPC I killed, but people saw me do it and their opinion changed of me because of it.
What I am saying is, that all the "character freedoms" I have been hearing about that The Witcher 3 lacks, isn't really different than the games they are holding up in comparison.
You say:
It really depends on how people play it, but the options to at least express their position or their change are there
The same can be said for TW3. There are different dialog options to choose that express his personality. If you (Inquisitor) choose to hate mages and then have some epiphany and change your mind, what reflects that? If I hate mages, then choose to save them, it's the same result as if I loved them and chose to save them. If I like mages (as I did with my elf rogue) and chose to imprison them, it's the same result and reaction as if I hated them and imprisoned them. So, the freedom you have is minimal and shown in options that are never acknowledged outside brief conversations. Don't get me wrong, I love, love, love DAI's characters and personal missions. Dorian is the great character ever and stands behind no one, imo---but the Inquisitor's own personal change of heart against mages, the chantry or anything else is never reflected.
It's the same with Geralt, I'm not saying it isn't. (besides the changes I mentioned) But to say he has
no growth at all and the player has
no agency with him at all--is false. Sure, you have limited agency, but so does DAI and a lot of other rpg's.