i think if you look at his career from black star forward, it really has been a transformation w/ mos.. there have been experiments and missteps along the way.. but after listening to The Ecstatic, i got a feeling like that's what the experimentation blossomed into.. i def. saw a distinct change in the way he rhymed and the way he put songs together - his subject matter seems more "mystical" too.. even if his general crew and beats are similar to his older stuff, i really do believe there was a paradigm shift there.. he even said "yasiin" and "bey" all over the album, so if we use that album as a jumping off point for this "yasiin bey" moniker, i think it makes a lot of sense.. and it seems genuine too.. imo