Walikum as Salam, sure sister we can respectfully disagree.

Also, I would like to reconsider your point 6 (.. Rather than quoting a Hadith ) , a kind of similar argument we cannot understand the Quran without understanding the life of the prophet ( even lot of commandments we do are not mentioned in the Quran like how to pray, how many prayers in each rakat, etc)

Below are the two references

(3:31)

Say: “if you do love Allah, follow me: Allah will love you and forgive you your sins: For Allah is Often Forgiving, Most Merciful.

Indeed you are truly vast in character. And you are indeed in a great manner/character (by means of the Quran). And you are of a high moral character. 68:4 ( to understand morals and best characters cannot be done if we do not study hadith)

https://www.minhaj.org/english//tid/638/Believers-are-told-in-the-Quran-to-obey-the-Sunnah-of-the-Prophet-saas.html

Hopefully, Allah guide us to the straight path and help us stay strong on it.