Is driving a car "easy"?
Consider our "hardware" and "software" have evolved for millions of years to be able to do things like spot berries and prey from yards out, knap stone heads, throw spears at moving animals.... Etc.
Driving feels easy because everyone alive today has sharp eyes, and a brain that can process movement, and oh yeah, they haven't been one of the hundreds of thousands who dies in a car every year. Additionally, the average American driver spent sixteen years observing from the back seat, then a week reading the book and taking a test.
I think the author wants to say that P and NP problems feel easy or hard. It's easy to deliver all the mail in town in a suboptimal way (for a human) and it's hard to arrive at the solution to a differential equation (for a human).
Was hoping the blog had more substance.