Determines whether the site has a large number of users.

The default criteria for a large site is more than 10,000 users.

function wp_is_large_user_count( $network_id = null ) {
	if ( ! is_multisite() && null !== $network_id ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: %s: $network_id */
				__( 'Unable to pass %s if not using multisite.' ),
				'$network_id'
			),
			'6.0.0'
		);
	}

	$count = get_user_count( $network_id );

	/**
	 * Filters whether the site is considered large, based on its number of users.
	 *
	 * @since 6.0.0
	 *
	 * @param bool     $is_large_user_count Whether the site has a large number of users.
	 * @param int      $count               The total number of users.
	 * @param int|null $network_id          ID of the network. `null` represents the current network.
	 */
	return apply_filters( 'wp_is_large_user_count', $count > 10000, $count, $network_id );
}