Zach Holman responds.
I can see both sides. Nothing about the language that Holman uses (or that Heinmeier Hansson does, for that matter) gets under my skin; perhaps I'm just thicker-skinned than many.
But meanwhile I know many readers who are put off by such things.
And so in my own writing I do my best to avoid such.
But I agree that you should (a) write about what you care about, and (b) write in your own words, not in the words that you think others want you to speak.
I guess I'm not adding much to the conversation, but there you go: a few pointers to some interesting articles and a bit of an observation by me.