The government is the "Eve" of this protocol. What happens in practice is that the government is controlled by political parties, and these have enough leverage

The government is the "Eve" of this protocol. What happens in practice is that the government is controlled by political parties, and these have enough leverage to put their confidants into sensitive positions. And the challenge of observability is that your adversary here, Eve, or the government, is the one providing the information. Therefore you can't rely on that information in the verification. Human error hardly matters. And normal elections shouldn't have razor thin margins, razor thin margins are already evidence of tampering. The irony is that instead they use the razor thin margins to justify ridiculous methods of counting. Several people are used to counting to prevent malicious opportunities, not innocent errors. Innocent errors have zero probability of changing anything.