Thank you. This is exactly correct. I was fully aware that I wasn't making a persuasive argument and it wasn't intended to be one. I wanted to emphasise and reiterate what I believe is a widely held moral norm.

The commenter I replied to seemed to unaware how far they had strayed beyond reasonable ethical statements. I don't think I could persuade them to change their position but I couldn't let that go unchallenged. Norms change one person at a time and speaking out is important.