It seems railroady to plan events? Like, for example, “three days after the PCs arrive in villageberg, it gets attacked by a dragon”?
Does the event happen regardless of what the PCs do or do not do? Is it waiting in the wings until they arrive, and then precisely 3 days hence it happens?
I actually like @DEFCON 1 's point last page which is that players don't really mind a "railroad" if what we mean is a tour along tracks that'll hit natural next steps, and the players get to mess around at the stopover stations for a while. Players tend to dislike things where any time they try and push around a little before moving on to the next plot point the DM goes "uh uh uh, no you don't!" But as he said, if it feels natural to progress (and you've bought into a game where there's an expectation of a plot!) then all is well.
I remain very curious how much involvement Matt had with the WOTC Critical Role campaign book, because that thing is an absurd railroad as written for most of it.