Hey, this is gonna come off mean, but I’m really hoping some of it will rub off and you’ll take something to heart.
You initial point wasn’t terrible. This next post lost anybody that may agree with you. Proverbs and quotes don’t win arguments, they come off as appeals to authority.
In your next paragraph you need to give some room so you don’t come off as unwilling to agree on anything. "I see where your coming from, but “this thing” rubs me the wrong way. “Explanation of why”. In contrast, if what they just said really doesn’t make sense to you: “I honestly can’t understand how you feel that way given that…”
Either way, this is also where you need to present your evidence.
Your final paragraph is great. You have conviction in your stance on the argument. Great way to end a first reply where you haven’t been convinced of anything.