After Cao Cao raised this doubt, if his demeanor remained normal, it would be surprising. Anyone would feel uneasy witnessing such a situation. Do you believe that if Liu Bei merely hinted at wanting them to follow him, at least half of them would immediately defect, and it's very likely they'd take their subordinates with them!
Although a centurion might only be able to take away a dozen or so close relationships, with this, Cao Cao's middle and lower-level officers would be more than half gone. It'd be surprising if Cao Cao didn't get ruined.
It's important to know that most centurions on Cao Cao's side don't know him, but they know to greet Liu Bei. Cao Cao expressed he had the urge to dismiss this group of centurions altogether.
