Comment by adnzzzzZ

A shadowban has the property that it's hidden from the user. Elon seems to want to make these kinds of actions transparent, like, for instance, deboosted tweets being visible as deboosted by their creator/other users, which is a pretty big difference. This difference is already visible in initial intent: Twitter hid what they were doing https://twitter.com/Twitter/status/1022658436704731136, while Elon is explicitly saying what he will do.