The irony of course being that many players rank that as one of the "worst" 5E adventures, often because they say it is "too railroady". Which just goes to show how all manner of player care about or don't care about all manner of different things. Some people genuinely find the idea of a series of encounters or adventure sites the PCs are expected to go to without the book explaining what to do if they choose not to is enough for them to say the adventure is horrible. Whereas other people seem perfectly fine with guiding the players along the path in the background, even if they try wandering off. One man's trash is another man's treasure, and all that.