I'm not the person that insulted the plugin, but I had a less than positive reaction to it too. I would say that this is putting into the template what belongs as JavaScript.

In pretty much every case, where the README shows the "before transformation" and "after transformation" comparison, the "after" part is what you should be writing to begin with. This feels like adding an extra layer of abstraction just for the purpose of not learning to do some simple things in JavaScript itself.

I would be pretty annoyed if I started working on an existing React project and it had that sprinkled across all the components.