This reasoning is deeply flawed. There is a tendency for something to seem "easy" or "obvious" after the fact, but this is ignoring all the insight, effort, and risk it took to find that initial successful path to the solution to begin with. Take a look at the Occulus Rift for example. Two years ago no one cared about VR. Today there are a handful of companies that claim to have a headset on par or better than the Rift. What changed? The Rift proved that it was viable, and now its relatively easy to follow their path to a successful product. Just because a solution is obvious after the fact, does not mean its creation was equally as obvious.
>Patents don't exist to protect ideas, they are supposed to protect unique and novel implementations of inventions, not ideas.
An apple lawyer could easily say that the "idea" here was unlocking of the phone, while the implementation/invention was the "slide to unlock" functionality. Neither is more right than the other.
Edit: would be an interesting experiment to have public downvotes