The whole trick is having your cake and eating it too. The LessWrong style exploits the gap between the strength of the claims ("this is a big deal that explains something fundamental about the world") and the evidence/foundation (abstract armchair reasoning, unfalsifiable)

That’s not the same issue, though. You’re claiming just plain overconfidence or that you find their arguments unconvincing. But the rhetorical trick we were discussing is oscillating between treating a claim as a joke or as deadly serious depending on the audience.