> Not lying is a basic precondition to have a reasonable discussion.

No, it isn't. Secondly, you're assuming malice where it doesn't appear there is any. Third, you're perfectly capable of communicated despite this, and certainly more than pointing out a disagreement over facts. Why comment at all if you only want to point out disagreement and don't appear willing to discuss the bulk of the commentary?

Meanwhile, "good faith" actually is a precondition for decent conversation.

EDIT: Meanwhile, googling "marijuana death penalty singapore" turns up way, way too many results for this to be likely to be an entirely false claim. So from my perspective you basically killed the conversation while contributing nothing of value. Eg https://apnews.com/article/singapore-death-penalty-drugs-exe...