Once you have made someone your guru, if you are going to criticize him and this weakness is going to get in the way, then it is better that you do not make him your guru. Otherwise, there is a terrible liability in doing so. After making someone your guru, do not criticize him. No matter what the guru is like, revere him until the end. If you cannot revere him, then never criticize him because to look at the fault of the guru is the fifth ghaati karma (one of five grave demerit karma). That is why they teach, “Be careful – the guru is the fifth ghaati, so if you look at the guru’s fault, know that you will fail.”
Do not fall into gossip about the guru you have chosen because everything is according to unfolding karma (udayakarma). Man cannot do anything. Now, to not raise objections is also wrong but you must raise them with vitaragata, i.e., detachment or without raag-dwesh, not by throwing dirt. You can comment, ‘It should not be this way,’ but do it ‘dramatically’ (superficially), because the guru’s karma is unfolding.