The shaming vastly diminished over the years, it used to be much worse. To the point of nearly making you public enemy #1 if you did not appreciated the story.
Which is funny, because stories appeal to people for different reasons. As an example, I genuine think the peak of XIV storytelling was at Heavensward; and Heavensward was genuine quite 'above than average'.

Shadowbringers, funny enough, was when I started to genuine dislike XIV narrative.
But it is fairly simple as to why: I do not like stories where I am a Chosen One/Special Nugget that is the sole salvation for us all.

The moment the narrative becomes such a thing, the world around the game turns shallow. NPCs that are not the main cast are slowly "dumbfied" for the sake of the protagonists, everyone seem to be incompetent so you can feel as a Hero, and no one ever stands up against you, never save you, never do anything to help you in a way that your character could not handle alone.

...And I do not like that. And I saw A LOT of that from Shadowbringers and forward. It takes away the appeal to me from being part of this fantastic world, of appreciating NPCs being innovative for the sake of the cast around me always getting a spotlight, even if I care about them or not. But that's just what appeals to me, and me alone. Just, the lack of conflict and vulnerability feels incredibly jarring to me.

Which is funny, because what made me truly appreciate the Shadowbringers Expansion, was Bozja narrative. I absolutely ate that with joy, because that side-story hit all the themes I was looking for within a story. Most of the times that the WoL has to do a side-narrative away from the Main Cast and away from the Main Entropic Existence-Erasing Threat level, the narrative tends to be *absolutely* better. Arcadion was another example of a story that was genuine much more compelling than most of the MSQ itself.

BUT. It is what it is, it is an overall good story with many people that love it.
They should just tone down a notch and understand that it's not a narrative perfection. It's not having someone try to ruin it for them, it's acknowledge that the story is not for everyone and has many glaring negative points too.
It shouldn't ruin your enjoyment to understand that people have different opinions and tastes, and even less bring some sort of "I should defend the MSQ because I deeply love it" thought.

Just go: "Yeah, sounds about right." and move on. Everyone's happy.