I for one think this is exactly the right attitude.

Sure. Maybe it's literally always a Bad Thing to show a loading screen. But plenty of apps have made that choice, for some reason or other. Maybe the developers are incompetent, or maybe they have a combination of technical and resource constraints that make this the best choice for them. It doesn't matter. At least this loading page can improve users' experiences with apps that have, for whatever reason, made the choice to go this route.