Perhaps I can clear matters up for you.
My son took to saying water at a couple of weeks for a very simple reason: we gave him water. That should be easy enough to understand. We live in Singapore which is on the Equator - it is very hot and any baby NOT given water is likely to dehydrate. He preferred water to milk, interestingly, in such circumstances. That was his choice. Why not ask him why he preferred it?
Singapore is not the UK: things have to be done differently there. People here are thinking in terms of their own UK based lives and not considering the differences others would face.
The blog is a simple account of what happened. Anyone who actually took the time to read through it from beginning to end - some 765 posts - would realize this. It is not a "piss take" as one of you suggested.
By the way, the origin of the word "poo" is, according to the American Heritage dictionary, from the word "pooh".
Since I started the blog, we have had contact from parents with interesting children from all over the world. We accept them as they are - and never have we subjected any of them to the curious doubts I see on this site.
The world is a plural place and there are many types of people in it. A mature response is to realize, accept and celebrate that - not to have a go at it.
I have encountered many kind and interesting and intelligent people through my blogging - and it has been rewarding. Not everyone, however, is nice - but luckily they are fewer than the other kind.
Best wishes all, in raising your children, early talkers and otherwise.