Such negative Nellies. This is why I don't publish anymore. You try to teach people something fun, and show people you can do quite a lot with very little. But it's nothing but criticism, and none of it constructive.
It depends on where you look. Hacker News is pathologically tilted toward negative sentiment, usually in the form of look-how-smart-I-am. I also announce these screencasts on Twitter, where the the response is universally positive (in six years, I can't remember a single rudely negative comment about a Destroy All Software screencast). Not that Twitter lacks its own problems, of course!
Totally get your point, but not being all that you are out of fear for consequences will never work out. Whiners and trolls are way overrepresented, it's a way of life for them. But for every confused individual there's someone who's been waiting to hear your voice, someone who's just as sick and tired of the same old as you are. This is your space as much as anyones, our space; as long as we're willing to claim it.
At the time of this comment, this post has 70 votes and 25 comments. 70 people that liked it enough to upvote it, and not all of these comments are negative. I know absolutely nothing about you, but if this HN thread is representative of why you don't publish anymore, might I suggest a thicker skin.