"squizita" on reading your post I feel like we've been reading different threads.
My reading of this thread is that:
a) Everyone is agreed it IS possible that some children would be reading Harry Potter at aged 6.
However, some people are suggesting that this 'some' is such a small number because
b) Harry Potter is so damn difficult to read that the HUGE majority of 6 year olds couldn't possibly read it
AND therefore
c) a child has to be extraordinarily exceptional to read it
Now, if b) and c) are true, then the logical leap that people are taking is that:
d) There are too many people on this website 'claiming' that their children read Harry Potter at 6
And therefore:
e) Parents are lying, or exaggerating
f) The children can't possibly understand what they are reading
g) the children are being 'forced' to read it so that parents can claim their child is reading it.
So, where people are disagreeing, as far as I can see isn't on point a), it is on point b & c, and therefore on points d-g.
Harry Potter (from book 3-4 onwards) is challenging because
g) The books are long
h) They do use some challenging words
But, based on my direct experience of a 6 year old who IS reading it and enjoying it (because I agree with "multivac" that I don't think many children would bother if they weren't), my child as a case study should be enough to disprove c). I know she is not extraordinarily exceptional. Her school would look at me with such disdain if I ever suggested she was (they would think I was insane). She is a bright child, but she doesn't stand out in her class OTHER than the fact that she is enjoying Harry Potter. I would say she is enjoying it because she loves a good story, she isn't worried about not understanding every single word if she has the understanding of the plot (this is my guess). She also likes a challenge.
I don't think that b) is necessarily true. It doesn't mean HP is for every child. There are some children who aren't going to be so up for a reading challenge, and who don't become so engrossed in books. But those things do not make my daughter exceptional. There will also be some children who focus really carefully on the detail and who want to understand every word. That isn't my child, but that is a talent in itself. My guess is that those children might not enjoy reading something that is a little challenging. However, if b) isn't true, it becomes more plausible that more children are trying it. As I have said before, I do not think that reading and enjoying a book are at all related to full understanding.
So, I'm fundamentally disagreeing with your assessment. Personally, I that points e-g are as unlikely as the super exceptional child, because really, why would anyone bother? Particularly on an anonymous site.
As far as I am concerned, the vast majority of posters have not been exhibiting "needless pedantry and willful misinterpretation".
But that's just my interpretation.