I don't think you give adult women enough credit for being able to make up their own minds: "No mother can make an informed decision when personal, judgemental comments are being made". As some mothers said in reply to the topic they made their own choices in the face of being judged by others. And if we were all so susceptible to the judgements of others (and show me anyone who doesn't make judgements), we would all be simultaneously racists, liberals, pro choice, anti abortion, pro vaccine, anti vaccine, etc.
As for some people looking down on others for their choices, it's not the thread that caused that, it's a fact of life, we all do it. I look down on others for some of their choices and they look down at me for some of mine. Maybe it is even helpful for some women sitting on the fence where their birthing choice is concerned to see that it is harshly judged by some people and why (and to see the replies in response to that judgement). The thread reflected the responses they could expect to encounter in the real world, and I would think that this is actually helpful.
I still don't know why the thread has to be locked rather than requesting that people not make personal attacks. And who knows, if you let it unfold, we may all manage to finally agree to peacefully disagree. Or not.
But it is your forum to do with as you wish.