They moan about how the horrid Cass person used 'the impossibly high bar of a double-blind trial'. I can't be sure without going and looking it up, but I'm pretty sure that Cochrane reviews chuck out anything that isn't double-blind.
In any case, it's not an 'impossibly high bar'. Double blind trials are standard when bringing new drugs to market.
Plus, Grace Lavery has signed it. I'm not forgetting GL's miscarriage comment in a hurry.