The actions to warn and suspend users are kinda intentionally invisible or at least less visible. The idea is not to publicly shame the users and to let them co

The actions to warn and suspend users are kinda intentionally invisible or at least less visible. The idea is not to publicly shame the users and to let them come back and continue to participate without attaching a public black mark to their account. So you usually won't see a direct response when you flag something except that your flag is declared valid and the problem is resolved in some way. The SO mods also handle thousands of flags per day, so they're even less chatty than mods on smaller sites might be.