Anecdotal, but I have eaten 5-10 mangoes a day, among other fruits, for long periods of time and remained at 8-10% body fat. I pay close attention to what I eat and how it affects my body composition, and I stopped worrying about eating too much fruit long ago.
The 2 main studies in this article are not very instructive -
1 was done on diabetics with groups eating more or less fruit, but no mention is made of what the rest of their diet was in relation to sugar/carbs. It mentions no impact to their weight or diabetes, but would their diabetes + weight have improved by cutting carbs, sugar & fruit?
The other study was n=17 so not very solid.
What's more interesting is research where fruit, sugar, and carbs are removed entirely or almost entirely (keto). T2 Diabetes is commonly reversed and weight loss adherence increases.