Good. At last you recognize Hajj, Salat, etc. to be part of Millat Ibrahim. This is a good beginning, your all confusions can be easily cleared if you allow the book to speak for itself. For the sake of time, let us continue just two, the circumcision and adultery arguments a bit further.
You wrote: “Millet Ibrahim is circumcision. But Quran says Allah has shaped, fashioned and perfected us, so how can we chop a bit off?”
Although you have not provided me with a specific verse to indicate what you stated, I will simply ask you this: Do you clip your nails? Do you get your hair trimmed? Would you use the above argument to advocate “don’t trim your nails, don’t get haircut, it is prohibited since God has shaped, fashioned and perfected us?”
You wrote: “Millet Ibrahim is stoning. Quran says 100 lashes but it does not say you cannot stone to death so your argument that we can do what it does not stop is proved false by this example which you do not understand the implications of.”
LoL, Jawaid Bhai, bring better arguments, these are dead on arrival. If you use inverted logic, this maybe a possibility in your la la land. First observation is what God has not made Halal/Haram, you have no authority to do so as per 16:116. Second, I wrote earlier somewhere if Quran is silent on something, you cannot use Quran to find Halal and Haram aspect of that something. Since “circumcision” is not even discussed in the Book, you cannot make it Haram or Halal.
In the case of adultery, just a bit of reading the book with care is needed. Quran is not silent on adultery, rather it commands the punishment up to maximum 100 lashes administered by a suitable court. Thus, it supersedes whatever is out there on the subject. When God has decreed a matter, no one has the authority to do away with it.
[5:48]: And We have revealed to you, [O Muúammad], the Book in truth, confirming that which preceded it of the Scripture and as a criterion over it. So judge between them by what Allah has revealed and do not follow their inclinations away from what has come to you of the truth. ….”
Those Muslims who still want to follow the stoning practices they will be guilty of killing a soul without due right as per 6:151. Thus, they will be guilty on two counts, not following what is commanded and following what is prohibited (Haram).
Is there anything related to circumcision in the Book?