Any project can be just as or much more tumultuous, Star Citizen being such a public project is exposing more people to this. All sorts of things can change during the 2+ years of a game development, and as new concepts are implemented, old things must be changed if they're inconsistent with the new par. For example, you can't just drop a 100k poly photoscanned character into an environment with assets designed around the constraints of just a few years ago. Here's another look at how things change in development - so many people touch so many things, and someone has to coordinate all of this and figure out what works and what doesn't, and then actually realize that and move forward with it across every little detail.
Publishers affect things greatly, especially in divergent ideas of what something should be, as seen with Prey 2, Doom 4, etc. Having less people needed to do things make everything a lot easier.
This is very true, and I think crowd funded projects have begun to educate more people on just how messy game development can be. The games industry has traditionally been, and in many ways still is, one of the most secretive entertanment industries out there. But now people get to see some examples of what game development really is, and that's a really good thing.