I really do not understand how any of that is relevant, it seems both you and OP are grasping at straws. The article’s conclusion was “It appears to be grossly

I really do not understand how any of that is relevant, it seems both you and OP are grasping at straws. The article’s conclusion was “It appears to be grossly negligent to ignore the vaccinated population as a possible and relevant source of transmission when deciding about public health control measures.”. If anything, waning vaccine protection is an argument for that conclusion.