I'm surprised by that YPC. Thought it was higher. I guess the Chiefs defensive line was really hit or miss and the run plays were either a an easy five-or-so yards or stonewalled at the LOS; no in between.
With any other RB, I can see the argument, maybe. But McCaffrey's role in the pass game makes him so dangerous, it's not like you're just not utilizing him on non-run plays.
Shanahan's only fault, imo, was taking the ball first in OT. And even then, there's at least a case for it (D needing rest, plus if the Chiefs tie it, you get first crack at second possession). Still didn't like it, though.