Keep in mind that banyan trees (those massive trees that can basically be a small forest in of themselves) are figs as well. Figs grow incredibly fast and often go from a bunch of vines all fighting to climb for sunlight into a giant fused mass that is a fig tree.
They are figs so they do produce the same kind of syconiums as figs but it's not really intended to be consumed by humans because it is small, tastes bitter, and can be a mild laxative. Plenty of other animals consume it tho and it's used a lot for feeding livestock.
The rainforest adapts -very- quickly to regrowth and second growth making way for the much older and much slower growing trees. I fear you underestimate the power of earths biology, especially in the rainforest areas.