There's nothing abnormal or wrong for the 'yoga students' to provide feedback to the 'yoga teachers' who conduct the 'yoga classes' for them to learn and practice yoga, and it's normal for the 'yoga teachers' who conduct the 'yoga classes' would appreciate feedback from the 'yoga students' as part of the worldly thinking or ideas about ways to improve or evolve.
Just that it's moving away from the teachings and practice of yoga about eliminating the egoism. This is part of the plays of egoism. It actually 'holds back' the mind from going beyond the perception of duality. It empowers attachment and identification with qualities of names and forms, as well as attachment and identification with the actions and the result of the actions.
A 'yoga teacher' who 'teaches' yoga to other beings should be able to be aware of the modification of one's mind and the actions and reactions, without attachment and identification with all these names and forms. There's no attachment or expectation towards one's action of teaching yoga to other beings and the results or consequences of the action of teaching. The 'yoga teacher' allows the 'yoga students' to develop awareness towards the modification of their own minds, and to act and react in their own way, or to express their thoughts/ideas/suggestions/advice out of their own perspective, or not, towards the process of transmitting or receiving the teachings of yoga to or from other beings.
It's not about - "I know I am a good yoga teacher and I can teach good yoga classes, and so, I don't need any feedback, suggestions or advice on how to be a better yoga teacher to give better yoga classes." or "I don't know whether I am a good yoga teacher, or not. Or whether I teach good yoga classes, or not. I need feedback/suggestion/advice from the students or other people to tell me whether I am good or not good, or how I can improve myself to be better yoga teacher to teach better yoga classes." As yoga really is nothing to do with all these names and forms. One can be identified or acknowledged as a 'very good' yoga teacher who can teach 'very good' yoga classes, but that doesn't mean that this yoga teacher is free from ignorance and egoism, or, vice versa.
This is nothing to do with 'pride' and 'arrogance' or 'humility', 'improvement', 'constant learning', or 'the way how it should be'. Feedback/suggestion/advice coming from minds that are not free from ignorance, egoism, duality and qualities of names and forms, is irrelevant towards one's mind evolution towards selflessness. The minds that are free from ignorance, egoism, duality and qualities of names and forms, don't 'require' or 'provide' feedback/suggestion/advice. As peace and compassion is nothing to do with whether the teacher is a 'good' yoga teacher who teaches 'good' yoga classes, or whether the yoga students are 'good' yoga students who perform their 'yoga practice' or 'yoga poses' 'correctly' and 'perfectly', or not. Just like to be able to let go of attachment, it's just 'let go'. There's no thinking about "how to let go", "how fast or slow to let go", or "one should let go in this way or that way which is the 'good' or 'right' way".
In a 'yoga asana class', whether it's a group class or a private individual class, there are countless mind reactions arise from different states of minds and different physical conditions. At one moment, the mind and the body is at ease with the practice, and in another moment, the mind and the body is not at ease with the practice. And this changes from moment to moment. For the same practice, different minds and different bodies react differently. One might suggest that the practice is too rush or too intense, another might suggest the practice is too slow or too gentle, while another might suggest that the practice is just nice, it's not too rush and not too slow or it's not too intense and not too gentle.
Teaching 'yoga classes' is not about trying to gratify everyone's craving and aversion towards their personal likes and dislikes towards the style, or type, or way of practice, and to adapt to the familiarity or habit of each individual. It's not about trying to be a 'good' yoga teacher to teach 'good' yoga classes to create 'good' yoga students to achieve 'good performances' or 'good results'. It's about doing one's best making use of one's opportunity, ability and knowledge, without attachment and identification towards one's action and the results or consequences of action. It doesn't matter if one's mind or other minds think or judge that 'this action' or 'the result of this action' is 'good' or 'not good'. It's about guiding the students towards the annihilation of ignorance and egoism.
A 'yoga teacher' or 'yoga student' will never be free from ignorance and egoism, if this 'yoga teacher' or 'yoga student' is still 'teaching' and 'learning' yoga according to the 'ways' of the worldly modification/thinking/ideas of the egoistic mind.
There is no egoistic intention or identification of "I am here to teach or share yoga with other beings", not to say, "I am, or I want to be a 'good' yoga teacher who can teach or share 'good' yoga classes to other beings."
Realize the essence of the teachings of yoga about selflessness, non-attachment, non-identification, non-duality, non-separateness, attributelessness, namelessness and formlessness, and be free.