Instead of replying with reasons why you won’t engage in a respectful discussion you could just downvote and move on.

Like I said it would save both of us a lot of time.

Sealioning is not respectful discussion. A respectful person would've taken the burden onto themselves of offering counter-evidence instead of firing off a barrage of obstinate questions.

Downvote and move on.

For repeat offenders, I prefer to call it out.