Unless they are government backed trolls with fake ids issued ad-hoc by that government. That's one of the possibilities.

People already sell access to their Google accounts so buyers can run not-that-legal ad campaigns. Creating one extra step won't do much to solve problems as long as the incentive is big enough and budget is sufficient.

In Western Europe there are no records of government backed trolls.

You present it as a possibility when it isn’t one as long as we can avoid autocracy which the existing trolls are working towards.