No, it should not. The reason for this is that you should use the number of screens that you need, to make the app function well and user-friendly. If you have a good reason why you need 80 screens, go for it. If you can trim it down (which you should do if you can), then do so.
But never focus on number of screens as a KPI for your usability. Otherwise you'll end up forcing too much (probably unrelated) functionality in the same screen, which will only make matters worse. A great screen is a screen that makes sense. It should have the right functionality and the right focus for that context.
So, the only question you should ask it: am I using the right amount of screens.
However, one big caveat: make sure you design the screen on top of some framework. Although the contents of the screens may be the different, they should all follow the same conventions and guidelines. Otherwise you'll indeed create a screen jungle. In the end usability comes down to the question whether or not your users can find their way in your app and do the stuff they need to do as easy and simple as possible.