Do I have to worry about useState causing a re-render?

[admin]

NB: I've asked this on wordpress.stackexchange, but it's not getting any response there, so trying here.
I'm not sure if this is WordPress specific, WordPress's overloaded React specific, or just React, but I'm creating a new block plugin for WordPress, and if I use

useState

in its

edit

function, the page is re-rendered, even if I never call the setter function.

import { useState } from '@wordpress/element';

export default function MyEdit( props ) {
        const {
                attributes: {
                    anAttribute
                },
                setAttributes,
        } = props;

        const [ isValidating, setIsValidating ] = useState( false );
        const post_id = wp.data.select("core/editor").getCurrentPostId();
        console.log('Post ID is ', post_id);

        const MyPlaceholder = () => {
            return(
                <div>this is a test</div>
            );
        };

        const Component = MyPlaceholder;

        return <Component />;
}

If I comment out

const [ isValidating, setIsValidating ] = useState( false );

then that

console.log

happens once. If I leave it in, it happens twice; even if I never check the value of

isValidating

, never mind calling

setIsValidating

. I don't want to over-optimize things, but, equally, if I use this block

n

times on a page, the page is getting rendered

2n

times. It's only on the admin side of things, because it's in the

edit

, so maybe not a big deal, but ... it doesn't seem right. Is this expected behavior for

useState

? Am I doing something wrong? Do I have to worry about it (from a speed perspective, from a potential race conditions as everything is re-rendered multiple times)?