It’s also a poorly written adventure outline more than anything else. I thought part of the reason for the slower release schedule was so WotC could focus on quality, but I’m beginning to think that’s corporate spin, cos the quality of the last few releases has been a pretty mixed bag. 5e is a fantastic game, but WotC’s support of it leaves a lot to be desired.
This is the bit that's puzzling me also. I really expected these adventures to be master classes of design with tons of clever techniques that would reveal insights in how to make an adventure exciting and memorable. Instead they seem quite random and illogical and barely follow the adventure design approaches outlined in the DMG (the adventures vary in this regard but I don't think any of them come close to nailing it, even Curse of Strahd). Dragon Heist is one of the worst in that regard.
I'm starting to think that adventure writing is actually very hard and no one knows how to do it...