Let's say someone is asking a question along the lines "Is it OK to do X in country Y" and someone else puts a comment below the question, stating "No, it's not!", while it is actually OK to do X in country Y.
It's currently not possible to downvote a comment, nor is it possible to flag it as a "Wrong answer", only as non-constructive, which does not apply here in my opinion. I also think commenting on the comment does not really help since that would likely lead to discussions in the comments. Wrong answers get downvoted and receive dedicated comments to prove them wrong and thus often get deleted later by the author.
But the comments seem to be persistent since there is no direct implication of posting uninformed, wrong statements.
Is the only and best way to simply post a better answer? Should wrong comments be left there standing without replies? Should they be flagged as non-constructive?