"Rule" is a bit strong, but it's true that you shouldn't do that. One of the courtesy assumptions stackoverflow works on is that you looked for an answer before posting your question, and the second post would have been closed as a duplicate of the first.
Maybe there is some deeply hidden rule against reposting. Or maybe you're just full of shit. But either way, reposting is clearly not a sign of reckless disregard for clearly laid out site rules, so the fact that a person has reposted their question does not indicate in any way that the person has a propensity for rule-breaking.
[1] https://stackoverflow.com/help/no-one-answers