As an update, the plant in question will come out from winter with all of its tips intact, dunno about bennefits, ive only experienced drawbacks ,with this plant in particular when i have tip die back. Last year the figs on the 2-3 branches that had retained their tip buds grew significantly bigger, started forming earlier and as a result also ripened alot earlier compared to the rest. Those branches had signifficantly shorter internodes, visibly thicker stems and bigger leaves. It was very interesting to observe the differences between those branches and the rest , which were sprouts from latent buds along the stem, the difference was just night and day. I am fine with the plant not making alot of twiggery at this point, it is awready quite dense in there and i will have to prune some of the weaker branches this spring.
Did i need the styrofoam winter protection? I dont really know, the winter was very mild, i have another fig inground 2 meters from this one and it is totally fine, all buds green and ready for spring, but againg last winter the other one also didnt had any damage, whereas the one in questio,with the winter protection, had almost all of its tips burned.....