londonlottie, I think we are misunderstanding each other.
I understood your earlier post to say 'EC isn't for me, and I don't understand why other people would want to do it either'. I was offering an explanation of why some other people do want to do it, not making any comment about people who don't EC.
Of course most non-EC'ers don't let their children sit in their own poo (though sadly I do know quite a few who do). Explaining the motivation behind people who don't want their DC in wet nappies doesn't tell you anything about the motivation behind people who don't do EC.
It's like I co-sleep because I want DS and I to get as much sleep as possible. Lots of friends don't co-sleep but it would be daft to say therefore that they didn't want their DC to get as much sleep as possible - it's just that the sleep methods that work for their family are different from what works for our family.
As it happens, not letting my DS sit in his own waste isn't much of the reason I do EC. I'm happy for him to be in a wet nappy all night long (he drinks & wees a lot at night) because our sleep is more important than his dryness. If we're out and about, I'm happy for him to be in a wet nappy for a while. People who do EC because they don't want their child to ever sit in their own waste would take a different view. That's fine - we don't all have to agree on everything.
Everything we do as parents is a compromise of what's good for our child, good for us and good for our families. As I said above, people who do EC do it in the way that suits them.
For me, it's been much more convenient doing EC than washing more nappies, and much more convenient doing EC than having to deal with avoidable meltdowns from DS. I don't think that has anything to do with being zoned into DS's whims - it's to do with what makes our family's life easiest. But what works for us isn't going to be what works for another child (or even necessarily another child in our family).
Pottying a pre-potty-trained child can happen as infrequently as once a day at weekends, or as often as every 15 mins. EC'ers are at both ends of the scale and everywhere in between. We just do what works for us. If you don't do EC, you don't need to be defensive about it - you've just made different choices and have different priorities.