Not sure what the question or comment is but to animated anything you need to build a 3d model. To rp or 3d print anything you still need a 3d model. to make stuff that looks great in mulptie quantities you need to to have model making and sculpting skills. Same goes for animating things you still need to be good at animating and using software. Either way you still need what amounts to a craftsman of their trade and the cost and time is comparable. It depends on the situation. In some cases haviing a physical model is needed. But in skme cases a space ship perse makes sense to fake out in CG. It all depends on budget. I dont believe one can replace the other. Take a look at the grand budapest hotel effect reel. For what its worth, Wes Anderson mixes both seamlessly where needed. In the case of interstellar. The TARs actually being there in the shot make the movie a bit more legit as far and analog effects.
You will get a multitute of opinions. I just think. It should be used where needed and as seamless as possible. It also besed on budget.
As far as model making with RP and 3d files. Some people need to learn to clean up their prints and recast those finished really nice so the end result needs less work for everyone wanting a copy. But just some happens some 3d modelers either dont know or have the time to do that.