Missing early return in set function example?

Regarding this example

import { useState } from 'react';

export default function CountLabel({ count }) {
  const [prevCount, setPrevCount] = useState(count);
  const [trend, setTrend] = useState(null);
  if (prevCount !== count) {
    setPrevCount(count);
    setTrend(count > prevCount ? 'increasing' : 'decreasing');
//    return; here?
  }
  return (
    <>
      <h1>{count}</h1>
      {trend && <p>The count is {trend}</p>}
    </>
  );
}

It seems to me that the example should include an early return statement after setTrend so React doesn't have to compute a tree that might be discarded immediately because the trend is changed from null to increasing / decreasing

first render

return (
    <>
      <h1>{count}</h1>
    </>
  );

immediate second pass

return (
    <>
      <h1>{count}</h1>
      <p>The count is increasing</p>
    </>
  );

Open the linked useState documentation example and compare its current behavior with the proposed early return after setTrend. Check the surrounding explanation and example output before deciding whether the example needs revision; done means the example and its explanation accurately reflect the agreed rendering behavior.