By bull, what do you mean? Lots of IEMs and headphones use graphene drivers. They all use a graphene spray coating on top of a normal polymer diaphragm. It’s not a lie, not false advertising. It’s just not pure graphene (Ora is the only one with that process right now). Basically think of it as laminated wood products (like instruments or furniture). You can have a stringed instrument that is laminated with a thin layer of expensive wood (curly maple, Hawaiian koa, etc) on top a cheaper type of wood. And then you have others that are 100% solid curly maple, koa, etc. There’s pros and cons to each.