Asashoryhu Drama

Can someone please fill me on on the Asashoryu drama? I'm a new sumo fan and don't know why he's being hated on and why the sumo association like banned him from Hoshoryu's yokozuna ceremony or something

https://preview.redd.it/gr5gqsbv33ge1.png?width=1170&format=png&auto=webp&s=622435531365d9932c9a6753c066b3c572fb4a7e