If you read his comment carefully you will see that he simply stated a fact. Stating a fact is not being a jerk. However, by saying "don't be a jerk" you've added a personal insult to the conversation.
Tone is really hard to convey on the Internet and I also hope you don't misread the tone of this comment. I'm writing this in the spirit of a friendly reminder that I myself need sometimes, too.
I think one issue may have been that what I wrote in my post was just the first two sentences; the whole second paragraph is cut-and-pasted from Winer. In that paragraph Winer himself comes off as pretty aggressive, and by quoting all of that it may have made my comment read as more caustic than it was designed to be. (though I guess we should heed techiferous' point about tone on the internet and give Winer a little benefit of the doubt here too!)
This community (and discussion forums in general) is only useful if we sometimes can correct each other's mistakes and use evidence to argue against each others' positions. However, we should always do so in ways that never make it feel like anyone is being attacked, and it's my bad if I fell short of that.
I sent Aaron a direct message on Facebook already saying all this, but I wanted to clarify for everyone else here, especially anyone who flagged my comment: I was somehow locked out of HN starting sometime shortly after I made my original reply to Aaron and ending just a minute ago. My best guess is that this must have been caused by some mechanism triggered when several people flag your post but a mod hasn't decided whether to ban you yet. Just speculation, though: it's also possible my co-founder logged into my account and turned on noprocrast as a subtle message to get off HN and get back to work! :) That's actually pretty good advice that I'll be following now. Have a good few weeks, HN.
I also work with people who are not very deeply skilled in computer technology, exactly the kind of people this product is supposedly for. It won't work for them, because they need to multi-task too. We learned a long time ago that inexpert users don't use less resources, they just use them differently. The argument that the Mac wasn't a serious computer was nonsense. I was there when all these arguments were fresh. This is not a replay. Keep dreaming if you want, but if you give the iPad to your mother expect the light to go on for you. At that exact moment you will realize how poorly prepared it is for that.