If I were one of the "unskilled" lineman (according to SJ Green), I would give him the opportunity to line up and face all the "unskilled" players on the other side...you know, the ones that are going to grind him into hamburger.  

The ability to run fast and catch-the-ball is a skill, most definitely.  However, the ability to take the brute force of 300+ pounds of energy, and deflect it out of the way of aforementioned skilled players, is also a skill, one that so-called highly skilled receivers ought to recognize.