Beyond reasonable doubt is one of several standards of evidence (along with "preponderance of the evidence" and "clear and convincing evidence"), but this is about whether the jury has to be unanimous in their decision that the standard has been met. In other words, what happens if 11 jurors find you guilty beyond reasonable doubt but 1 juror disagrees.
Welcome to Louisiana.
Louisiana had already rescinded this rule by the time the case got to the US Supreme Court, in fairness to them. Oregon, on the other hand...
Louisiana is responsible for many other wonderful innovations like ensuring jury trials for non-petty misdemeanors. Don't count them out yet.