And zero countries have compulsory voter research. If you take the question "what's my rational incentive to spend an hour in line at the poll after spending several hours sieving through ads news and spin to find facts about candidates", and you remove the "hour in line" part, the decision problem is pretty similar at the personal level.

At the social level, "what is the impact of encouraging more votes from people who won't voluntarily spend time on voting" is an interesting question, but I don't think that's the discussion the linked post was trying to have.