Helpfully he spends most of the article elaborating on what he means by "aggressively performative".
"It has a concise definition!"
moments later
"It took a whole article to explain!!!"
Also entertaining - the idea that racism has an uncontested definition.
It seems like a reasonably concise definition to me. It's reasonable to disagree with the definition of course, but to merely dismiss it as not concise is both incorrect and not useful because it lacks specific criticisms.
But I acknowledge people may disagree with this.