Some people get annoyed by bad grammar. Other people get annoyed when every grammar mistake is pointed out. Ninety-five percent (or more) of the people who read that saw the mistakes. We could potentially have a grammar conversation about every post with a grammar error. Discussions can get pretty meta as it is. These grammar-related observations never having anything to do with whatever point the article is trying to make, and they're just stating the obvious. We can all see the grammar is weak.