"The only good reason to have pull, pull is if you have a tail heavy condition, "
Not at all.
Scale appearance, or internal fuselage construction that makes for impractical or difficult straight line push rods.
That set up you show looks likes an awfully lot to go through, versus a string from one side of the servo arm to one side of the tail, then a string from the opposite side of the servo arm to the opposite side of the tail. A lot less complicated.
Les