Today’s question:
What is your interpretation of Jesus’ sayings about the prayers of believers “moving mountains”?
Within my discussion, I reference N.T. Wright’s interpretation from Jesus and the Victory of God.
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Alastair's Adversaria 
While I don’t discount the points you made in your video, I think, more specifically, Jesus is using Mt. Gerizim – Mt. Ebal contrasts here.
Mountains were believed to be “where the Gods dwelt” in the ANE. I think Jesus is saying, if you have faith (i.e. Mt. Gerizim-blessing), you can say to this mountain (i.e. Mt. Ebal-curses) be removed and thrown into the sea (spiritual realm of chaos).
To give further credence to this interpretation, the word “mulberry” is actually “baka”. It means “weeping” and represents sorrow.
Thus, a “mulberry tree” (Luke 17:6) is representative of the Tree of Knowledge of Good and Evil, and associated with “curses”, as is Mt. Ebal !!