I don't know how anyone can say it's the vocal minority with a straight face.

DT is unanimously criticized on each FFXIV reddit and across each regions forums. The main sub is notorious for silencing any criticism immediately, but that's not happening anymore.
DT currently is the lowest rated expansion of FFXIV (including ARR) on both Steam and Metacritic. The Metacritic score is even going down over time as more and more people finish.
The only place I've seen with an overwhelmingly positive response to DT is Twitter, but how much of it is because the people with larger followings are controlling the narrative there? Twitter is very unfriendly to small accounts, whereas other sites aren't and everyone's opinion can be seen equally.

At what point is it not a vocal minority? Seems like a pretty substantial chunk of people to me considering how much filled every platform with discourse. Not even Stormblood was this bad.

An aside - I wonder what it's going to be like once KR and CN get a hold of DT. They can be absolutely savage sometimes.