Why someone would get irritated when a word is used incorrectly, at least in their eyes, is baffling. I suppose the next thread will be the use of their, they're, there or you're and your. It's about context, especially on a gaming forum where there are people from various geographical locations. This isn't college, nor is it an office job where improper grammar could be noticed. If someone gets called 'a fkn noob' or 'a fkn newbie', the context will be the same, you're being called out. What it boils down to is, does the message come across? Simplicity at its finest.
Oh, and by the way, in link number two and paragraph number two, the person incorrectly spells the word doesn't. If someone is going to question the use of another's grammar on any level, you better get your spelling right...