Islam Critiqued ditches human depravity; Arabs corrupting Abrahamic legacy?

In answer to the video "Abraham and the Kaaba: From Borrowed Stories to Sacred Scripture"

By the time of the prophet Muhammad, the assimilation of the Abrahamic legacy into the regional polytheistic systems was such that only a distant echo had remained in their minds from their spiritual connection to Abraham. Just as happenned to the Temple of Jerusalem that slowly became transformed into a pagan shrine and idols were introduced in it 2kings21 the prime symbol of monotheism in Mecca became thus radically transformed through pagan influence. As the Ishmaelites, like the Israelites throughout their history, drifted from the original path of monotheism, the Hajj pilgrimage became a celebratory occasion, and the Kaaba was stocked with idols and false deities supposed to bring the worshipers closer to the One God, Allah, whom they believed in. Men and women would run naked throughout the holy precinct. Merchants from all over would travel to the Kaaba and set up shop during the pilgrimage. People and tribes from all over Arabia would make the journey to Mecca to take part in the festivities. But this annual pilgrimage was in greater parts disconnected from the Abrahamic practice 22:26-7. It was simply a time to make money instead of being charitable, drink alcohol, and commit immoral acts.

The importance of the annual event perdured despite the corruption. It was maintained by those that settled in Mecca, and the Arabs of the entire peninsula that got attracted to it with time. These are the points brought to attention in 2:196-7. And then until v203 great stress is laid on the spiritual dimension, forgotten and neglected, of that occasion. No other nation can be compared to the Ishmaelites' handling of their spiritual legacy and sacred shrine, than their own Israelite brothers.

They could not maintain the way of their forefathers despite the constant sending of prophets to them to bring them back to the right path. When the Arabs were admonished and urged to reform, they qualified the warnings as

16:24,27:68"stories of the ancients".

These Ishmaelites vaguely recalled the Abrahamic ways, but found no other constructive argument in their opposition but by denigrating it as old and useless stories, based on its ancienty and supposed obsolescence, inaplicability to the current circumstances. They never qualify these stories as "false". It was in fact one of the Quran's oft repeated functions, to "remind" the people of the truth they were still somewhat aware of but that had been supressed by falsehood. The Quran openly states that

26:196"most surely the same is in the scriptures of the ancients".

It repeats, time and again, its role as the guardian and preserver of the truth present in the past scriptures. Along with Abrahamic and monotheistic practices known in pre-islamic days, going back to previous prophets, was the Zakat which the people knew they had to give away to the poor but rarely practiced or misused 19:30-31,54-55,70:24,Deut14:28-29,26:12-14, fasting 2:51,183-187,7:142,Deut9:9,Ex24:18,34:28,Matt4:2,Lk5:33-6 prayer that continued after Ibrahim established it in the settlement of the Kaaba 14:37,19:55,Dan6:10,Ps55:18,1Chr23:30 until it was disfigured 8:35, animal sacrifice, circumcision.

Other concepts propounded by previous prophets and which the Quran was reminding its addressees of, include the Resurrection, day of Judgement and accountability Matt13:24-43,1Kings17:17-24,2Kings4:17-37,13:20-1,1Sam2:6,Isa2:17,26:19,66:14,Ezek37:1-28,Ps71:20,Prov6:22,Prov31(see Rashi),Dan12:1-2,Quran29:36,54:36-9.