This has nothing to do with corrupting the written law as the words plainly show. It is talking about people ACTING corruptly and its obvious one can do that with any scripture or any law.
Here again its not speaking of corruption of the text but handling the law in a way that devalues or misinterprets it.
This is just a biased reading of what the text actually says and it is strikingly illogical to use an argument that 'proves' corruption by citing the supposedly corrupted text unless of course the two bits you have cited are the only unadulterated ones.
The Jews received the highest number of Prophets. Yet, neither Moses nor Jesus nor several other Prophets liked the Jews!
The old Jewish trick about Jews received the highest number of Prophets which then makes them GOD Almighty's "Chosen People" is nothing but a deception. In fact, it is a bad thing for the Jews that GOD Almighty kept sending them Prophets who many of them ended up getting killed anyway by the Jews themselves according to the Saying of Jesus peace be upon him below.
"O Jerusalem, Jerusalem,
you who kill the prophets and stone those sent to you, how often I have longed to gather your children together, as a hen gathers her chicks under her wings,
but you were not willing. (From the NIV Bible, Matthew 23:37)"
The Jews were corrupt! They corrupted the Word of GOD Almighty. Like Jeremiah 8:8, the Noble Quran clearly states it:
"But on account of their breaking their covenant We cursed them (Jews and made their hearts hard; they altered the words from their places and they neglected a portion of what they were reminded of; and you shall always discover treachery in them excepting a few of them; so pardon them and turn away; surely Allah loves those who do good (to others). (The Noble Quran, 5:13)"
"O Apostle! let not those grieve thee, who race each other into unbelief: (whether it be) among those who say "We believe" with their lips but whose hearts have no faith; or it be among the Jews,- men who will listen to any lie,- will listen even to others who have never so much as come to thee. They change the words from their (right) times and places: they say, 'If ye are given this, take it, but if not, beware!' If any one's trial is intended by God, thou hast no authority in the least for him against God. For such - it is not God's will to purify their hearts. For them there is disgrace in this world, and in the Hereafter a heavy punishment. (The Noble Quran, 5:41)"
No race, color or gender are chosen by GOD Almighty in Islam. Everyone is evaluated by his Good Deeds.
Allah Almighty Said in the Noble Quran:
"O mankind! We created you from a single (pair) of a male and a female, and made you into nations and tribes, that ye may know each other.
Verily the most honoured of you in the sight of Allah is the most righteous of you. And Allah has full knowledge and is well-acquainted. (The Noble Quran, 49:13)"
As I mentioned above, Muslims believe that the idea of "Chosen People" is a Jewish lie that was fabricated and inserted into the Bible to make the People of Israel be the Superior over all nations. The Bible, however, admits that it got corrupted by the Jews themselves, thus making their bogus claims get flushed right down the toilet.