Well, first reason would be to improve airflow - you are around so you are the expert ;-)
Second, as you are outside a good reason would be perhaps if you put her on a turning pedestal that rotates similar to the sun 😜 Then you should perhaps defoliate the shaded part. Seriously, perhaps if you shade another smaller plant.. I also keep my pinky toe even if it just wastes energy and space in my eyes😅
In the last picture - middle left there is an old leaf hanging around. You could always remove old/weak/infected stuff.
Would appreciate if you could give me a short message what this metal fence cage helps/what your experiences are? I can only see a big annoyment with that😅