Wow, that essay is a bagel for the mind.
When I encounter a Rortian engaging in one of these “mature tantrums”, my wish would be to put them in charge of managing a task, say, building a bridge. Let the practical act of managing the accpomplishment of a task aid them in changing their own mental diapers.
After hearing enough of their non-arguments spouted by a bunch of slackers putting the project behind schedule, I’m betting the Rortian discovers a clearer head.