Apologies if you're an expert because i am certainly not, but i was under the impression that parts of the string theory mathematique had started to become usef

Apologies if you're an expert because i am certainly not, but i was under the impression that parts of the string theory mathematique had started to become useful in other endeavors. Things like a second derivation of general Relativity from first principles, or just generally an immense set of mathematical tricks for renormalization and such that are being applied even to current field theories. I do understand the political zeitgeist around string theory is that it's not useful and never will be, but I've heard murmuring recently that while 10 dimensions isn't collapsing easily to 3 or 4, the techniques learned during the exploration are actually highly useful in varied area of high level theoretical physics. Namely the much more physical models built on QFT rather than string theory