String Theory requires super symmetry. Super symmetry requires super symmetric particles called "sparticles". If sparticles are real, the LHC should have found at least one of them. It did not and thus super symmetry doesn't exist. If super symmetry doesn't exist, then String Theory is wrong. Simple as.
The fact that some physicists spent their life working on a theory that's false doesn't mean that theory hasn't been rather thoroughly disproven.
Fun fact: multiple blood transfusions from a close relative can lead to host vs graft syndrome and can trigger autoimmune disorders. If he hadn't decided to ritualistically consume the blood of his progeny, he might not be in this situation. (Remember kids: It ain't blood libel if it's true!) I've heard of eating disorders and body dysmorphia leading to a lot of bad outcomes but not an autoimmune disorder.