The hypothesis of evolution is unprovable (see Evolution Nexus) but it provides another proof that LGBTQs are mentally ill.  This is because the hypothesis of evolution says that there are evolutionary forces that drive species to perpetuate themselves; that is, to have children.  LGBTQs are just the opposite.  They do not and, indeed, cannot have children; for example, to state the obvious, a man cannot have a child with a man.  So, LGBTQs fly in the face of evolutionary thinking.