I'll bet you couldn't give me at least one verse that says precisely what the subject of the scriptures is. I'd guess the same about most of the scholars you mention. Short of that, neither they nor you are hardly an authority on the matter.
Then your guess is wrong. Why would you even think that when literary analysis is done they don't know the subject of a verse? Where does that idea even come from?
Not only is the meaning of a passage discussed there are multiple layers looked at when doing analysis of writing styles:
"If one looks at all of these elements together, we can see just how brilliant Mark’s story is, having multiple allegorical layers weaved into one."
Obvious meanings are looked at as well as metaphorical and allegorical meanings and instances of using, transforming, reversing other stories like Mark using Psalms.
"Additionally, in this story, Mark seems to be pointing out how the Jews are erroneously viewing Jesus as the scapegoat, where Jesus is scorned, beaten, spat upon, crowned and pierced, and dressed in scarlet, and though Barabbas is the actual scapegoat, the Jews mistakenly embrace him instead. So Mark seems to be portraying the Jews as acting completely blind to the situation and choosing their sins (i.e. Barabbas) rather than their salvation (i.e. Jesus). Finally, this story seems to suggest that the Jews have also chosen the wrong model for the expected messiah. Whereas Barabbas could be seen as the murderous revolutionary, in line with the common Jewish belief that the messiah was expected to be a kind of revolutionary military leader, Jesus on the other hand, exemplified the suffering servant model of the messiah (another Jewish messianic model, though arguably less popular than the former), and one that would circumvent any need for a military revolution by enacting a spiritual victory through his death instead. So the Jews appear to have chosen the type of messiah they want, rather than the type of messiah that God wants instead (or so Mark believes anyway). Furthermore, rather than using a random lottery (i.e. God) to choose which “goat” would serve as the scapegoat, and which would serve as the atonement, the Jews removed God from the equation and made the choice themselves. If one looks at all of these elements together, we can see just how brilliant Mark’s story is, having multiple allegorical layers weaved into one."
The Gospels as Allegorical Myth, Part I of 4: Mark
So no, every scholar is looking for all meanings as well as stories that authors copied from and how and why. If you read the link you would probably realize this instead of making odd assumptions? Just because theologians assume this is a message from a God and ONLY interpret it from this angle that is far from making someone an "expert".
