> What gave you the impression I was assuming bad faith?

You said "I would guess you're not asking a serious question here"

It was a direct quote from your original comment

You brought it up...

Without offering any opinion on its merits, if you think justifying this controversial claim is off topic, then so is the claim and you shouldn't have written it.

You said, "I would guess you're not asking a serious question here," which is to say, you were guessing that the question was asked in bad faith. Or, at any rate, you would, if for some reason the question came up, for example in deciding how to answer it. Which is what you were doing. That is to say, you did guess that it was asked in bad faith. Given the minimal amount of evidence available (12 words and a nickname "__Joker") I think it's reasonable to describe that guess as an assumption. Ergo, you were assuming bad faith.