Why in the hell someone would put there nose on a changing handle and run 10.5" LOP just to crane to see an optic... on a hunting rig?

Just plain nuts...

What possible advantage is there vs. running a proper LOP with a properly mounted scope?

That is the question.

I honestly don't think you have a clue about this stuff.

If you are not actively engaging EVERY enemy you encounter... you are allowing another to fight for you... and that is cowardice... plain and simple.