Whatever minor factual flaws the blog post had, Heroku is on the right track. Deployment is a pain, and putting together a language-agnostic way of solving it is much needed. Not that I'm happy with that way involving someone else's servers, but fundamentally, too much effort has been wasted on language-specific products. I applaud Heroku's efforts and hope the general focus on building pan-language frameworks continues.
TreeFrog is listed as a web framework for C, but it's really a web framework for C++. They may seem similar, but they're really two totally different languages. The mixup of C and C++ is really not a good thing.
The coding subreddit is largely a reaction to the loss of focus and meme-infestation of the programming subreddit. It seemed to also be more theory-heavy at the time, but looking at it now it appears to be striking a better balance.