It's not in the bottom half of the published modules, that's for sure. It's loads better than Hoard of the Dragon Queen, for example, which is somehow still on there. But it's a little bit of a railroad. My preference is modules where the PCs have more say in how the module goes. Tomb of Annihilation, for instance, there's a huge variance in how to get to the end. Curse of Stahd involves a lot of direct manipulation of the PCs by the villain, funneling the PCs. I've seen it done very well, but I understand people preferring a different style of adventure. Hoard, for instance, is absolutely terrible in this facet of adventure design. That's why I really, really like Murder in Baldur's Gate, which similarly involves villains manipulating the heroes, but in a less-overpowered way.