In fairness, it's the GPs fault on this occasion for not punctuating his or her post. Decarep just read the GPs post as it was literally written (I had to read it 3 times myself to gauge what I thought the post meant).
The post still made contextual sense when read literally. It just wasn't technically accurate. Hence why it was so easy to misinterpret.
Plus the next time you make sweeping generalisations about the reading comprehension abilities of HN it is probably worth remembering that this is an international community and thus English isn't going to be everyone's first language.