Islam that never was, I respectfully disagree. I do not have my head in the clouds and clearly see that at no period in human history has the Word of Allah prevailed over all people. Islam is Divine, we humans have to interpret it according to our understanding and level of knowledge, it becomes ‘human’ through this, but if we do not reach for the summit we will always fall well short of the goals we wish to achieve.
Culture is a big part of religion, be it Arab or Persian; Islam is meant to transcend this and give us a set of permanent values to live by. Hijab has no part in this as, so you correctly described, there is wisdom in the Quran which should stop men from harassing women and not put women in clothing to ‘protect’ themselves from men. I reverse the logic for Hijab by applying it to men first, since they have become the dominant factor in the man/woman relationship, it is up to them to sort out themselves first.
When religion remains encased in culture it creates inequalities, Islam as a Deen is not an unreachable goal, it is a way of life that Allah knows we can easily follow, but we choose not to.
The Prophet left us which writings to follow? ONLY the Quran and any practice/sunnah/hadith that you infer in your post come from Persian fairy tale writers. There is no practice of the Prophet except the Quran.
As for your reference to Islam not being 100% error free, please do not equate what Muslims are doing as Islam; this is nearer to 0% Islam, but the Quran is 100% error free, it has no contradictions, it is perfected, so I again disagree with your statement.
This is based on reason and intellect, not indoctrination, blind following, or emotions.