Muslim argument from Isaiah 29:12

Muhammed was illiterate, so Muslims look to the Bible for evidence that they will be an illiterate prophet. A verse some Muslims use is Isaiah 29:12.

Or if you give the scroll to someone who cannot read, and say, “Read this, please,” they will answer, “I don’t know how to read"--Isaiah 29:12

Some Muslims try to link this to Muhammed, since according to Islamic sources when Muhammed met Gabriel he was told to read, Muhammed said he can't. Therefore, since Muhammed can't read and some one mentioned in Isaiah 29:12 cannot read therefore, obviously the illiterate man is the prophet of Islam. That is, until we actually read the text of Isaiah 29 where its about Israel's inability to understand a vision without the help of prophet:

Be stunned and amazed, blind yourselves and be sightless; be drunk, but not from wine, stagger, but not from beer. The Lord has brought over you a deep sleep: He has sealed your eyes (the prophets); he has covered your heads (the seers). For you this whole vision is nothing but words sealed in a scroll. And if you give the scroll to someone who can read, and say, “Read this, please,” they will answer, “I can’t; it is sealed.” Or if you give the scroll to someone who cannot read, and say, “Read this, please,” they will answer, “I don’t know how to read.”--Isaiah 29:9-12

We see God is depriving the people of a prophet/seer to be the people's eyes/head, without them understanding God's vision is like giving a document to a man that cannot open a scroll, or a man with a scroll that cannot read. That is to say, its a waste of time, futile. The illiterate man here is contrasted with the prophets, meaning the illiterate man is not a prophet.

Strange that there are Muslims would argue from this verse.