I woke up this morning and was surprised the thread was locked as it had been quite a pleasant discussion when I went to bed last night. After reading that particular post and that post not getting ignored, I would be shocked if it didn't get locked.
If it was just the soap insertion post I don't know why the offending post couldn't just be moderated so the discussion could continue.
Because, even if posts are deleted and people are asked not to do it, people will miss that post and it'll start up again. Better to shut it down than have to come back and be squicked out again.
Plus, this is the EDame's home and the mods, in my head, are like her family members that live there and know the house rules. One of them is trying not to be too TMI and is not that big a deal, IMHO.