i think he mean, that players don't like to get expectations to play in a team and get instantly selled again.
Yes, basically, if you think that the hurt feelings of the simulated staff should be a consideration, do you also apply that consideration to the buying and selling of players?
Myself, I don't think this aspect is worth considering. And, in fact, it's irrelevant to this suggestion. You can hire and fire a staff member instantaneously right now.