It is necessary not only for Islamic scholars and jurisprudence but also applicable in any field-the idea is and should be that there are several, many interpretations of a single verse or poem or story depending on the field.
For example there are multiple beliefs even in Islam. There is no consensus that beards are a must nor is their consensus that hijab is a must. The ideal that should permeate is that everyone interprets religion with his or her own eyes. Unfortunately the mullahs have forgotten the concept called Ijtehad, a secular debate that started with the scholars even saying "I may be wrong." They never assumed they were correct and the khalifas. Todays mullahs are narrow minded and wish to impose things on everybody else. Here is the problem and since there is no consensus between various schools of thought each mullah is advocating his own stand of Islam. In short there is no uniformity in belief.
You will see the same with Iqbal. The man is said to be an extremely liberal person by some, while alleged to be parochial and narrow by others. By some he is called pro Indian others pro Pakistan. The thing is everybody interprets every message, every ideology differently. And that is the purpose of Allah. If he had wanted us to have the same thinking he would have made all of us Muslim, Pakistani and Punjabi. He did not so it is for us to learn from others and respect others. This is something scholars have not learned at all.
I see the ummah in a weak position my friend. If we were strong our cultural soft power would conquer. It is weakness when you have to impose rules on the society and ban youtube.