You know derogatory is a synonym for rude and insulting, right? And LeBurns clearly isn't the only one who found Hines' word choice to be less than polite.
I think it's another example among I don't know how many of Pete Hines being less than cordial with customers. Nothing really to be surprised about at this point. If anything, I think the people who are acting like the tweet means he's some kind of freedom fighter in a glorious crusade against over entitled brats are the ones who are taking things out of proportion.
Like I said, I wouldn't have asked him on a Saturday, and I wouldn't have come knocking again the same day, Then again, Twitter moves so fast that if you don't get an answer the day you ask, you probably aren't going to get one.
That being said, I'd have asked Gstaff. In my experience, he seems to be more communicative and helpful. Even when I don't actually get an answer, at least the conversation is polite.