Please read the whole sentence. It starts with: If React is “Just JavaScript, then...” React users often say that "It's just JavaScript" but then they write:

  return (
    <div>
      <h2>You clicked {count} times!</h2>
      <button onClick={() => setCount(count - 1)}>
        Decrement
      </button>
      <button onClick={() => setCount(count + 1)}>
        Increment
      </button>
    </div>
  )

Nue is the opposite side of the same coin.