Actually nobody took away the premine from Steemit. As far as I know, Sun still owns all that STEEM unless he sold it.
It depends on how you define it.
If you use WEB2 logic no money was stolen.
If you use WEB3 logic money was definitely stolen/taken.
It doesn't matter what the WEB2 branding is of this community's token.
Whether we call it Hive or Steem is semantics in WEB3.
Semantics in WEB3 is the law in WEB2.