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.
One is simply saying, 'ISKCON didn't take care of my body.' If we cared about the soul, then we would do something for the benefit of the soul. Which is associating with devotees, chanting, taking prasāda, studying the scriptures. But if you want to be the rich guy walking around