Substance?
Is going back and forth for 100 posts in every single argument obstinately blithering dozens of iterations of, "Show me where I said that. Thanks", and, "I've already told you", and, "You're really saying that... {something they didn't say}" what you consider substance in a conversation? By the time I come back to this thread you'll have wasted another two posts arguing that you didn't insist on what someone claimed you insisted on, hiding behind a defense of only asking questions and not making assertions. But clearly you're asking the questions rhetorically and you already know the answers to them, just waiting for someone to answer them wrong.
If they claim you said something, you'll say, "I didn't say that."
If they ask if you're saying this, you'll say, "Where did I ever say that?"
If they don't engage with your questions because they're a trap, you'll say, "Okay, I'll ask the question again <copy paste>"
If they do engage with your questions, you won't meet them halfway but will always find whatever you can to be contrarian.
It's a slippery successful debating tactic, but it's not substantive conversation.