Those of us who helped build the foundation of what would be the (at least commercial) aspect of the OSR where doing it as a reaction against the edition treadmill, against viewing classic games as outdated. Little did we know that in so doing, a new treadmill from many sources would spring from the seeds we planted. That people would take our work and do the exact thing we were opposing, claim it is past its expiration date, and here is a new improved version with fresh innovations.
Old School Role-Playing is a term used by Grey Beards (the oldest and crustiest neckbeards) to justify why their version of role-playing is better than yours.