2) She disapproves if your Inquisitor performs the Elven rituals at the Temple of Mythal even though what your Inquisitor is doing is simply respecting the beliefs of the Elven people. I doubt she would be very charitable if the Inquisitor decides to enter a Chantry and give zero f*cks about the appropriate rituals that one must perform.
Yeah, that bothered me a lot. "Why are we wasting time with this heathen nonsense?" indeed.
I like Cassandra, but that was in very poor taste. Especially if you play a Dalish Inquisitor who befriended/romanced her and who has stated many times throughout the game that you don't worship the Maker and you believe in your own gods. It's like, "I've been putting up with your Andrastian nonsense all game. Why don't you show respect for my beliefs, culture, and people for once?"
3) She disapproves of corruption and murder in the Halamshiral questline but endorses Gaspard who is not a paragon of virtue.
To be fair, none of them were paragons of virtue, yet we all had to pick at least one. Most of us can only justify our choice by saying why we think our candidate / combination is slightly less repulsive, or slightly nudges Orlais toward the direction we think it should go, than the others. Since Gaspard pretty convincingly acts like he has no time or patience for "The Game" during the Orlesian Ball (I had no idea he actually dabbles in The Game until I'd read the Masked Empire), I can see where she would think he's the lesser of all evils.
4) She disapproves when your Inquisitor does not see themselves as the Herald of Andraste, even though the evidence points in that direction and is in fact, verified at certain points in the game.
5) She disapproves if the Inquisitor allies with the Rebel Mages even though the Rebel Mages were manipulated by Time Magic and the Fiona is Redcliffe is not the Fiona we meet in Val Royeaux, in the same way the Leliana we know and the Leliana we meet in the Dark Future is not the same due to time manipulation which resulted in a different timeline.
6) At the same time, she approves if you ally with the Templars even though the Templars were manipulated by a demon that was put there by the Lord Seeker, which is an internal struggle due to the flaw in Templar administration but that's okay. However, people being affected by reality altering time magics that had never been seen before, even by an Elven "God", need to be locked up in a tower.
7) Cassandra's attitude towards mages in general due to the death of her brother at the hands of blood mages is not an excuse. Most mages we meet in this game with the exception of the Venatori mages are not blood mages.
8) The biggest red flag is how she does not reverse her disapproval if what she initially disapproved of is shown to be wrong. Now you could argue that this is an in-game flaw but its there. She does not change her opinions on mages, magic, templar, nobility, etc no matter the evidence and no matter what our character has to say. Some might say that such behavior is that of a "strong and independent woman" but to me, its the behavior of a person of faith refusing to change their perception of reality in the face of new evidence.
Not to mention she spends most of the game openly suspecting mages of foul play and blaming them for the majority of the war, even when Templars are shown to be just as suspicious and/or at fault throughout the game. For example, when running around killing rogue mages and Templars in the Hinterlands, Cassandra frequently says things like, "Do you see this? The mages have gone mad with power!" While other companions (like Solas and Varric) keep having to remind her, "I see just as many Templars" or "The Templars aren't looking any better." When Fiona approaches you in Val Royeaux, Cassandra immediately accuses her of killing the Divine because she wasn't at the Conclave, even though Lord Seeker Luscious was also supposed to be there, also didn't show up, and you literally just saw him acting like an uncharacteristically evil, ambitious, power-grabbing villain. Once you get back to Haven, Cassandra then advises against going to the mages for help since it could be a trap, to which Josephine has to remind her, "The same could be said about the Templars."
In general, I really don't like Cassandra excusing or overlooking the same flaws in the Seekers and Templars that she jumps to condemn for the mages. (That kind of attitude from Seekers is a huge part of why some Templars were able to abuse their power over mages so badly over so many centuries that eventually tensions caused both groups to snap and lead to the war in the first place.)