I interpret this as: the world is just exactly as it is, whereas "moving" is a concept formed in the observer's mind. IOW, the "true"/"hard" reality follows its

I interpret this as: the world is just exactly as it is, whereas "moving" is a concept formed in the observer's mind. IOW, the "true"/"hard" reality follows its own course and does not care about intertial frames or other conceptualizations.