How long have you been a
fan? Since before Mahomes was the QB1 our RBs run routes from every possible position. X, Y, Z, H whatever. This is Andy's offense. How many times did we see Kareem run routes from the X or the Y? Dozens, at least. Probably close to hundreds.
Look, it comes down to flexibility, or in footballspeak, being multiple. RBs in Andy's offense have to be multiple. And have to be able to pass pro. THat's the job in a nutshell.
Rojo isn't multiple, and he doesn't pass pro very well, if you can call what he does in passing downs, pass pro.
CEH will pass pro, so automatically he's up a rung from RoJo in Andy's offense. Nothing to argue about there, period. Gotta protect the half-billion dollar QB.
Then you have to be able to run routes from at least the RB and slot (Y/H) just to stay on the field if Pat decides to go hurry up. That's how half the big plays happen; Pat sees a defense he wants to exploit and goes no huddle, keeping the DC from substituting. Rojo doesn't have that capability. Sod you have to sub him out if he can't do certain things, which allows the DC to sub as well.
The exact opposite of what Andy and Pat want.
Look, don't argue with me, go to RoJo's house and get on his ass for not being able to stay on the field because he won't pass pro.
If he could pass pro and run the plays Pat and Andy want to run in no-huddle, then yeah, let's get him on the field, because empirically he's a better runner than CEH.
But he can't, so Andy won't, so this is a moot discussion, again. Over before it starts.