[jakejake]

I kinda thought the same thing. Finding the perfect navigation can be a huge challenge for larger apps. Though I agree with the article that it's important to analyze and be critical of your app structure as much as possible.

As far as the article mentioning user engagement stats, it probably matters a lot what the point of the app is. If you're trying to get a social app off the ground and your users literally will not spend 15 seconds learning to use it - you have to put everything in their face. If you're making a vertical market app or something where the users need it to do actual work - they might appreciate a quick, single-click access to a large menu vs clicking through multiple levels of tabs.