The whole damn industry is deep in sunk cost fallacy. There is no use case and no sign of a use case that justifies the absolutely unbelievable expenditure that has been made on this technology. Everyone is desperate to find something, but they're just slapping more guardrails on hoping everything doesn't fall apart.

And just for clarity, I'm not saying they aren't useful at all. I'm saying modest productivity improvement aren't worth the absolutely insane resources that have been poured into this.