I'll make a concerted effort not to feed the trolls, but categorically false statements must be either confronted or removed.
I don't know what you mean by "confronted", but usually people have in mind something like the online callout/shaming culture. We don't want that there. Snark, name-calling, flaming, putdowns, and so on, are against the HN guidelines. They're also not in your interest, because (a) they don't persuade, and (b) they discredit your view in the eyes of neutral observers.