Upon reading the post, I realized how click-baity the title really is.
There’s only a brief statement about Elm, in the beginning, describing why the author has quit using Elm, and then:
> In this post, I'll just highlight some of the most important things I've learned since the beginning of 2016 by using PureScript.
Quitting Elm has little relevance to what the author has learned about PureScript.
I guess the title could’ve just simply been What I learned in PureScript