I am baffled by what has you so offended here. I don't see anything disrespectful to the .NET community in that quote. He's not saying ".NET programmers aren't

I am baffled by what has you so offended here. I don't see anything disrespectful to the .NET community in that quote. He's not saying ".NET programmers aren't serious about their craft" — he's essentially saying "Ruby was really popular in the Silicon Valley startup culture, but other stacks were more popular in other places and among other demographics." The "middle-American dad using .NET" is more or less the complete opposite of Heroku's initial core audience, so he was essentially saying "How do we expand this to everybody?" You even fit what he's talking about — you're not in Silicon Valley, and you're using a different technology stack. I don't see anything wrong with being you, and I don't think Teich does either.