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.
They're theorists, you're paying for pencils and paper. String theory may not have produced a theory of quantum gravity yet, but neither has any other line of inquiry.
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.
Do string theorists not use models on supercomputers?
You forgot to add "with our current technology ability to probe the required energy scale".
https://www.americanscientist.org/article/is-string-theory-e...
If not realistically "non falsifiable" this sounds to me at least "not scientifically relevant" in the context of physics.