For any blog post like this, the absolute first thing should be a demo. "Simple" and "fast" are claims that cant be verified by looking at code, and a demo is a primer that makes code easier to understand.
You'd need to setup the Trigger.io build / test environment to see the full example code from the post used in a mobile app. Maybe next time we can show that to you in a screencast, we'll work on it.
Not a screencast as I can't gauge lag from that, but a functioning demo to play with.
I want to be able to test on my phone to see it's "simple and fast" from the UX perspective before I'll investigate further.
Is using/experimenting with Trigger.io as trivial as an apt-get or npm install?