I don't think you properly understood what I was saying, as you've repeated the same thing here. I'm saying that being Jewish does not mean that one is correct. Also, quoting from the Tanach does not mean one is correct. Lots of Jewish people are making mistakes about Judaism all the time. Lots of Jewish people mistakenly quote from Tanach all the time. You repeatedly give these as reasons why Matthew is correct, but they are not sound arguments.
I agree and disagree. Certainly being Jewish does not mean that one is correct of that quoting from the Tanach does not mean one is correct but equally, just as you are saying he was not correct, does not mean you are right.
I stand on that he, along with John, and Mark, were correct about Jesus the Messiah as foretold by the prophets, Moses and the Psalms.
Matthew is not correct because he is Jewish. He is not correct because he quoted from the Tanach. He did so wrongly. His interpretation is not contextually sound. This can clearly be seen from the context in which the passage is found. This also makes it clear that he was manipulating the passage in order to buttress his argument. However, it failed to do so for obvious reasons, which is why early Christianity didn't make great gains among learned Jews.
Just as many Jewish people disagree with each other, I would say that he wasn't manipulating the passage.
As far as learned priests, yes, many did not but many did:
Acts 6:7 So the word of God spread. The number of disciples in Jerusalem increased rapidly,
and a large number of priests became obedient to the faith.
Acts 18;8 Crispus, the synagogue leader, and his entire household believed in the Lord; and many of the Corinthians who heard Paul believed and were baptized.
Acts 22: 3 “I am a Jew, born in Tarsus of Cilicia, but brought up in this city. I studied under Gamaliel and was thoroughly trained in the law of our ancestors. I was just as zealous for God as any of you are today.
Acts 17: 11 These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.
I think it's also important to point out that neither Saducees nor the Pharisees were leaders, but sects. There were leaders of the Pharisees and I assume the Saducees had leaders as well, although I have not heard of them.
They made up of much of the Sanhedrin
I do not know who Nicodemus was or the reference you are making.
Part of the Sanhedrin.