Little update.
I wanted to turn off my handsfree power liftgate so I 'disabled' the parameter in my above post and it did not successfully disable my handsfree power liftgate. I forgot to look in the menu for the power liftgate but the above parameter may be literal in the sense that it is just enabling and disabling the power liftgate option in the center stack infotainment menu. From what I hear, the menu in the center stack literally turns off the powered portion of the liftgate, so you must open it by hand which is a little tough.
Not sure what Power Liftgate Control does in my above picture either but I may play around with it some more when I get some time.