Endwalker as it is was shown to be a dark expansion anyways, the deaths and the questionable actions taken during the entire MSQ just portrays how dark and unforgiving the situation is. story wise its an amazing way to dig into it, and they're not apologetic about it. StormBlood Was an expansion of war, clashing of ideologies and just a drag to run due to all the oppositions that took then and there, EndWalker is an expansion that dives into nihilism, the will to live, the stubbornness of one being too loyal to something as well as the lengths and actions someone will take when the situation is too much to bear.

Its a reflection, and it is done as safe as it is. the blood on the flag as a symbolism to how Quintus was truly a man of Garlemald who was stubborn and would rather die than have things change. Zenos was a misbegotten youth who knew nothing but conflict and finally feeling something, SOMETHING, has decided that this is it and his life fulfilled he has nothing left to make him feel the same way again. And Shiva as it was- yes Heroic but also tragic.

So I agree that Trigger Warnings are not good with this game. And I won't say I'm an expert- but if you can't stomach it, then there are other ways to mitigate it. not everyone shares your beliefs in psychology- some heal faster than others and some heal slower than others and being an "Expert" more often than not only feeds one side without looking at the other.

So if it is too much for you, accept it as it is- Hell Matsya has the right of it!
The entire Thavnair storyline has the right of it.

So if it truly bothers you so, then skip it. click away fast, something.
but never push the need for something niche into a game that has focused itself into the hard and deep story it is known for, and I do say this kindly,
maybe don't easily relate yourself to everything in a story, cause you're not the only one going through shit, everyone does- so there's no need for the whole "Trigger Warning" or "Stop Edgy Content" debate, its the tone of the story- some will like it, some won't, some will have problems with it, some others won't.

Its an experience, and an experience shouldn't be watered down due to unrelated discomfort.