I really need a Colonialism bingo card…
But yeah, this is exactly what Europeans thought when they found Angkor Wat. The complaint they had whenever they kept destroying all these “burial mounds” in the New World.
In fact, this is actually pretty common of all Troll “Temple cities.”
In Zul’Gurub, Zul’Aman, even Zandalar, we see that cities serve primarily a religious/communal function. The buildings made of stone are pavilions, shrines, temples, halls, but no actual permanent residences. That’s because Troll residences -even those of the Zandalari- are actually made of wood and just as often found outside the city.
The cities themselves may fall into relative disrepair, but so long as the stone structures remain, they can continue serving as sites where religious ceremonies are performed, the dead interned, meetings conducted, etc. Because nobody is actually living in them. Being places where people live was never the actual intent.
You actually saw something like that in Angkor Wat. A big stone temple city that was built, but most of the residences at the time were wooden. As the city depopulated, people started building communities around the city, which retained its religious significance.
And one of the first things European explorers concluded when they “discovered” the area were all these stories of a city thousands of years old; left to ruin, abandon by primitive natives who know no better. It wasn’t really not as old as they thought, was never forgotten or lost, as people had continued to live around and in it in various capacity over the centuries, and it still played a part in their religious lives. There were even pilgrimages there.
Also, the idea of preserving ruins of any kind of hard coming to Europe. It was very common to dismantle old European ruins or treat them as trash yards, and when the idea of preservation arose, it was more academic than religious. So yeah, coming from a more Christian European mindset, all this rabble rousing natives made about their sacred sites being despoiled was pretty silly and generally dismissed.