It is because Steelers fans (diehards) want a big RB that punishes opposing defenses the same way Bettis did it.
And Kuhn was a local college kid (Shippensburg) who came into camp and fit the bill.
He was running over people in camp and in pre-season games. So much so that a few excessive optimists on these boards had him pegged to stick around here and be a force.
Then reality struck and Kuhn was a Steelers bust ... those that came out in support of him were lambasted and he became a running joke on these forums as a friendly reminder for us to temper our enthusiasm for undrafted rookie RB's.
... and now I'm stuck with my Redman stigma eternally ....