There are a lot of reasons for people to think what they thought then, and what many still think now.
Mac = "Most NFL ready, with a high floor, but a lower ceiling than the rest"
So, now, with Mac showing himself to have been the most NFL ready (along with Lawrence), and having the high floor, this, so far, has gone as advertised. Nothing is out of order at this time. The question was always expected to be about development and improvement, not day one ability. The hope is that the pundits got the ceiling part wrong. That they got the floor part correct is not reason to be claiming some sort of pundit delusion. The question was always expected to be about development and improvement, not day one ability.
People such as yourself are prematurely crowing.