There's a trend on SciFi.SE, where any mentions of works that are less popular with fans (Dune prequels, Highlander II, Matrix sequels, Star Wars prequels) are frequently met with snarky comments denigrading the unpopular works.
"What Prequels"? (just commented on my own question today about Dune :)
"Too bad that movie didn't have any sequels" (insert XKCD comic).
Usually the snark is not really offensive or rude (e.g. it almost never rises to the level where it should be flagged and deleted on that basis).
However, it's a noticeable and pervasive pattern, and there's a possibility that it can make users who like those works feel unwelcome.
What should we do with such type of comments as a policy? Leave them alone? Ban them?
(again, the assumption is that none of the comments in question are really rude or offensive)