Bureaucrats have no role in practical tasks, they exist only for the purpose of making sysops. Sysops are trusted not to take malicious actions. Changes to stylesheets cannot cause data loss, and can even be reverted by sysops in the case of total site failure using a hand-constructed rollback URL.
# protect global styles and js
if ( NS_MEDIAWIKI == $this->mNamespace
&& preg_match("/\\.(css|js)$/", $this->mTextform )
- && !$wgUser->isBureaucrat() )
+ && !$wgUser->isSysop() )
{ return false; }
//if ( $this->isCssJsSubpage() and !$this->userCanEditCssJsSubpage() ) { return false; }
# protect css/js subpages of user pages