The neophyte thinks self-centered, because they feel themselves are important. Therefore the Guru's importance is there because the Guru is connected to me. So the neophytes tend to fight over the importance of who is serving their Guru. Because I am serving my Guru, the whole world stops and everybody
Pretentious is that the living entity thinks he is God and separate from Kṛṣṇa. Because if we don’t do devotional service, what is left for us? Illusion, staying in the material world, being God. That is more pretentious.
What we are discussing here doesn't change the position or authority of GBC. This gives them the authority that they are supposed to have, that is given by the sampradāya, as well as it gives to the presidents their authority.