An off-hand comment is not a hijack. It becomes one when stupid people take umbrage and begin their usual apologetics for barbarians.
Idiot: <non-sequitur>
Rest: <bemused disagreement>
Idiot: “Hah! Apologists!”
Rest: “Fuck off, would you? We were having a conversation here.”
Idiot: “It’s your fault for disagreeing with me.”
Why not piss off and insert your dumb crusade into a thread where it’s more relevant? A cookery thread, perhaps.