I might understand the excitement for a truly new competitor in the search space, bit this article sounds more like an ad from openAI than something critical and informative.
Particle accelerators have been built since way before any string theory was formulated.
The biggest and most powerful existing accelerator (LHC) has been built to fulfill the high energy/high luminosity requirements to explore the Highs boson energy regime (that has been found) and at most the lightest supersymmetric particles (not found as of today).
The Higgs boson is a cornerstone of the Standard Model. Supersymmetry is an extension to it that does not involve strings.
You are right, the amount of money spent in string theory proposals has been staggering if you take into account the size of the field. For decades competing (or even just non-aligned) research lines have been starved to feed this behemoth.
They produced a family of theories with an infinite amount of underlying possible geometries, and we still don't know if these reduce in the low energy limit to the standard model. I humbly suggest this reading:
This is the well known litany from string theorists to try and justify the inordinate amount of money threw at them to get back nothing of physical value: no falsifiable prediction.
Instead of reasoning on the worth of the effort spent in this direction to investigate nature (a very tangible companion) they try to steer the discourse toward this nonsense. We spent >50 years listening to these tales and the time has long passed since we are required to stop playing with these smoke and mirrors.
I was going to rant something about open standards and how they did not care to test this toy on Firefox (but they did it test it on safari), but I grew tired.
IIRC, there is another quantum number, the chirality. All the neutrinos measured are left chiral. The sterile neutrino, which does not pair with other lepton, is right chiral.
You are conflating the whole scientific endeavor to a very specific problem to which this specific approach is effective at producing results that fit with the observable world.
This has nothing to do with science as a whole.