Tutorial - basic - Reactive state and $effect (05-effects)

[Tomassito]

In basic tutorial lesson on effects:
https://github.com/sveltejs/svelte.dev/tree/main/apps/svelte.dev/content/tutorial/01-svelte/02-reactivity/05-effects

it is stated that reactivity is only useful if we do something in response:

"state is only reactive if something is reacting to it, otherwise it’s just a sparkling variable."

And the $effect rune is given as an immediate example.
But at the same time we see the warning that this rune should not be used too much...

This is not logically cohesive in my opinion.
(We give first example of how something (reactivity in this case) can be utilized, but right away we discourage this usage).