The point is that we are talking about a situation in which you are allowed to edit before it’s moderated (like before), but once it’s moderated, it would be too late to edit anymore.
Meno’s rationale was that posters would be more careful what they post if they know they can’t edit once it’s moderated. But my point is that, once it’s moderated, there are already people reading it and the damage is already done, so the posters should be careful anyhow, so it wouldn’t make sense to say that someone wouldn’t be careful about what they write because they know they can edit after moderation!! At that point the damage has already been done!!
I do agree with you that I am more careful now that I know that I can’t change anything once I hit submit than I was when I could still make changes after pressing submit. But that is because there was nothing wrong with waiting to make changes after I pressed submit because no one could see it yet anyhow. And it was very hard to really edit my posts properly before pressing submit because it was hard to see the posts clearly.