You are more than entitled not to know what the word 'performative' means. It is a new word and an ugly word, and perhaps it doesnot mean anything very much. But at any rate there is one thing in its favor, it is not a profound word.
I moved straight from kindergarten ,at age 4, to graduate school to my position at Lake Forest ,at age 26. No break. No bumming around Europe. No peace corps. No corporate cubicle job. No stint as a Starbucks barrista.