Yes he was soft, Lynch, Doornink, Watters, John L Williams, Curt Warner, all much more physical, Shaun was so soft he would not pass block and had to be taken out of the line up. None of the others were, so that makes him a one dimensional back as well since he was rarely in a game for a passing situation.
It was why as a 1st rounder he could not take the position from Ricky Watters also, he was soft and continually in Holmgren's dog house.
Holmgren drafted him hoping for Watters 2.0 or a Roger Craig 2.0. He got a Franco Harris clone, run out of bounds and go down. The reason Rocky Blier was so popular was because he got the tough yards and was physical as well. Franco was on a multiple Super Bowl teams and had a long career granted. But nobody talks about him in regards to all-time greats either really unless your in Pittsburgh, still I think they more fondly think of Bettis.