While this isn't really the place to discuss this, that your most complex example is a simple waterfall of three nested async functions doesn't do much to sell the superiority. Start mixing in conditional async calls with downstream async branching. And look at the Promise-based solutions to async.js (https://caolan.github.io/async/v3/), a library nobody misses. Still not sure if your blog post is a joke or not though, frankly. If it's a serious post, then it seems troll-y to inject such a fringe opinion any time someone casually mentions promises being good.

What's wrong with, https://github.com/request/request-promise-native