The parentheses. He’d added parentheses. He was calling the function when the component rendered, not passing the reference for the click event. React wasn't broken. His attention was.
It wasn't flashy advice, but Leo was tired of magic. He wanted plumbing.
He’d watched tutorials. He’d copy-pasted from Stack Overflow. Nothing worked. He was a fraud in a hoodie.
And there it was. A tiny, red error message: this.handleRemoveAll is not a function .
Then came the chapter that broke him: "Indecision App – The Remove All Button."