They’re wonderfully designed lands. Utter masterpieces of theming. Potter Paris looks like more of the same high quality.
The ride selection in the lands reflects Universal’s profoundly misguided reluctance to build family-friendly attractions, even as the resort’s identity is tied more and more closely to family-friendly franchises and the resort competes for a wider range of guests. It’s a stubborn remnant of an earlier, very different era in the resort’s history.
Both true.
But that's not their MO... It's not misguided or reluctant if that's not what they aim for. Sorry to sound like a broken record, but they aren't Disney - and that's ok! It should be worth mentioning that we also don't know the parameters of the Ministry attraction.
Furthermore, while there are family-friendly elements in the series, there's no way any child under 5 should be watching the story of, ultimately, a grown-ass man trying to kill children. Potter aims for an older kids crowd; so Universal SHOULD market their E-ticket rides to that demo.
And for the younger tykes, Universal offers rides like Hyppogriff and Hogwarts Express, or experiences like the magical wands and Ollivander's.
Now, that's not to say I'd LOVE to see a dark ride like what @belloq87 mentioned, but that doesn't mean it's any type of failure or misguidance.
How are Gringotts or the Hogwarts Express not family friendly dark rides?
They are - but the caveat is they do have height restrictions so there is that asterisk.