I disagree. There are indeed a few cases where you can't initially be certain that you're interacting with a human but sustained interactions over a long enough period of time solve that. So the only time we would "need" such a approach is for people to know that something written by a total stranger was written by a human. But you should be getting to know people and not trusting complete strangers anyway!
Even then it doesn't actually solve anything. Paid actors can still post things in an attempt to influence complete strangers. This is exactly what happens right now. So you'll know the paid actor is a human. Or at least paid off a human to provide access to one of their online identities. Great.
So it's a knee jerk response to scary new ml but the ml isn't actually that scary once you think about it and the proposed response doesn't actually solve the supposed issue or any other current problems and it erodes our freedoms in the process.