Theme block style dependencies while enqueuing

[superpoincare]

Bundled themes enqueue a block style, such as /css/blocks.css in twentytwelve.

These css rules sometimes overwrite the rules in the files with handles wp-block-library and wp-block-library-theme

While the dependencies seem to be maintained, for the sake for completeness, shouldn't dependencies be made explicit in bundled themes' functions.php files?

For example, dependencies in this enqueue?

wp_enqueue_style( 'twentytwelve-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentytwelve-style' ), '20181018' );