I think that we just live in a different time, and the expectations are different. There are plenty of cathedrals in Europe that are not only lit but also put on scheduled projection-mapped "shows".
In a way, right from the start, this kind of architecture is intended to make a dramatic statement: the ornate and detailed, flamboyant in some cases (not this building -- although there are all of the different kinds of stone inlays). And stained glass windows can make a similar statement.
For sure, at my age, I have to twist my thinking a little, but it is kind of just a modern extension of making a statement, and perhaps something similar would have been done long ago if they only had the technology.
I'm not saying that I like it, but also I'm aging out of being the target. And I do have firsthand experience that people do seem to like colored lighting on architecture.