This is not the first time you have taken such a tone on ulema. Understand one thing clearly, if a scholar is firm towards other aalims which you may disagree with but as a student with much more limited knowledge you should remain quiet.
I am afraid if you carry on with such an attitude you will NEVER gain knowledge that will be of benefit.
Basically you talk too much for someone still studying.
About banking if students are confused so what?. Mufti Zar Wali Khan has the knowledge, hence if he sees something wrong he has all the right to have objections.