I can further asure u that this is true for figs, i not only prune and tip them, at this time i also remove the smallest fruit set so they can fix energy on the bigger ones.
About cherimoya, i dont have this experience yet, i was also thinking of tip pinching my greenhouse ones, they are hitting the gh roof but then i thought i would let them grow and produce energy for the fruit set and for winter.
Come spring i will have thicker branches which will have more energy and capacity to hopefully carry fruit, i will prune hard in spring.