Against Matthean authorship: why would an eyewitness rely so heavily on the work of someone who was not an eyewitness?

Matthew 9.9 is another thing. There is a lack of info on Matthew (especially if the author is supposed to be Matthew.

3/20 manuscripts only have their title attached.

Original codex may have been untitled and that a later hand added the title.

Variant 3 shows that the original text didn’t have a title.

Brant Pitre agrees that later gospel writers would imitate the form of the title.

More on titles.