Greetings friend, the mimblewimble protocol is all about secrecy and minimizing the size of blocks to help with the scalability issues suffered by another blockchain and you hope it is integrated into the Steem blockchain.

Like you, I think it gets integrated into Steem Blockchain to help with Scalability, but I see its complexity and strict privacy policy make it a bit tricky to work with Steemit Blockchain, being that Steem Blockchain is an open-to-all Blockchain (Social Media Blockchain).