Why doesn’t Carti release under Opium?

I’m posting here because I don’t have enough karma to post under r/playboicarti

May be a dumb question. He founded Opium in 2019 but both WLR and Music were released by AWGE and Interscope only. Is carti even “signed” to opium? Because a lot of artists that have their own record labels release music under them as well, like Kanye with GOOD and Kendrick with PGlang.