On stackoverflow, in my days at least, not active anymore, there was a rule which forbids answering duplicate questions (and most low quality or spam questions). Answering such questions is a try to steal points and encourages users to ask similar bad questions. I personally agree with that rule.
A mod on this site explained that the rules are a little different here (again it wasn't the case when I was active on this site, but new mods, new rules I get it), therefore I'm asking you this: I really want to downvote every answer on this question, because they are trying to steal points especially the guy with the highest rep, clearly he knows it's a dupe.
But under the new rules, are we allowed to downvote answers on such questions or flag them for deletion?