It's a common pattern that is used everywhere. If we were to zero base think, then yeah, it's absolutely horrible. But since it is already established people

It's a common pattern that is used everywhere. If we were to zero base think, then yeah, it's absolutely horrible. But since it is already established people look for it. Better to go with an established pattern than reinvent your own. That being said, the article advocates tab bars and I think that is fine if you have the screen real estate. Often times you don't though.