'given that the OP effectively insulted my former self by paranoidly instinuating that i would have sneered at her'
Good God.
As far as I was aware the OP didn't mention you Aitch. That is quite an extreme form of egotism combined with hyper sensitivenss you have there.
The OP was light heartedly referring to some behaviour by some women without children, which obviously has some basis in reality as others has admitted to experiencing the same or previously have been those women.
I think the fact that your post was the first response made it seem particuarly harsh to the OP. Had it ben in the middle of other responses, it would have seemed less like the slap around the face that negative put downs to your thread can be.
Your follow up explantin of 'you were trying to be funny, and you're not, but others on MN could have made that funny' is also another very harsh and personal judgement.
Her OP was not about you, it wasn't even about all childless women, and it cetainly wasn't about women who are going through IVF and despatley want children so stare at them longingly in the supermarket.
I'd have thought that was obvious.
You seem to be making very tenouis links to in order to take offence and make it about you, and it justify harsh traetment of the OP.
It may have hit a nerve, and you may have reacted, but be adult enoug to recogise that that is your issue and not the OP's fault for not considering every way her OP could be twisted by a vulnerable person to take offence, and think about how and why your response seemed harsh to the OP.