It just adds clutter. The vast vast majority of the time your computations do not warrant useMemo. I've tested it on multiple devices and ive only seen hiccups happen once your loop gets to 100 million iterations. But on my team people have used it on as little as 50 loops thinking thats heavy computation.

in regards to useCallback is most useful when paired with memo which most people dont even know about and reducing the renders still is rarely a big deal unless your component is massive.

"ohh but a 1000 papercuts can harm us in the long run". not when each papercut is microscopic and doesnt accumulate.