I do not need comments from an unknown pianist, As I have an excellent one for weekly lessons. In addition I take periodic lessons from a concert pianist, where we do have a master class format throughout the week.
Bring here any recordings of your excellent teacher and concert pianist. And I will point: what they do not know and where they are wrong in their performing. I will do it not with my words, of course, but mostly with my own recording of the same music.
I do not deny at the same time that both of these pianist can know something that is unknown to me. Nobody is perfect and knows everything.
As I told already, I do not need their names and addresses. You do not even need to tell me your relation to these recordings (that it is your teacher or mentioned concert pianist). If you say here that you just found these recordings on the road - it is all right for me. I do not fight with persons, I fight with mistakes - it is my profession, vocation and hobby.
Your HUGE advantage from this way to learn: you have a real choice instead of a believe of blind kitten that somebody teaches you everything you need in your life.
Here is an ocean of interesting opportunities. For example, give to your excellent teacher my recent recording of "Fur Elise"
together with my famous, well known to you neighbours on my post (below).
and
and ask his/her opinion: who of these 3 pianists is closer to the truth, who plays better?
Before, answer this question self, of course.
If your choices coincide, your choice for your teacher is right. If your choices are opposite, then you have a good reason to think on this topic more.
You can give to your excellent teacher only my recording and put here his/her comments on my way to play. My teacher V.Nielsen always told us that people, who hate us, are extremely important and useful for musicians. Because they will pick up each your mistake and report it to you in a most convincing way. No one teacher or friend can do this job so perfectly. After my own concerts I never lost a chance to ask my enemies for comments on my performance. And it helped me a lot.
Do not be afraid. No risk is there. Try!