Mic troll, if you're reading this, take it as constructive criticism. Instead of pontificating your point, ask a quick, concise and relevant question.
A friend of mine used to joke about rewriting the rules of discourse during Q&As so that instead of this: (P = presenter, T = troll)
P: “Any questions? … Yes?”
T: “Have you considered the effects of aliasing?”
P: “We’re using a bicubic blah blah blah…”
P: “Any questions or comments? … Yes?”
T: “I know about aliasing.”
P: “Thank you.”