Save some WordPress site options as site meta to make site queries easy

site-meta-options.php

<?php

// 🥕 Carrot
// To make the transition easy from site options to
// site meta for specific options we want to easily
// query, this idea will automatically duplicate
// specific site options to site meta and keep in sync.

// NOTE: this is an idea expressed in sudocode

add_filter('update_option', function($option, $old, $new) {
  $options_whitelist = ['theme', 'classic-editor', 'site-template'];

  if (in_array($option, $options_whitelist)) {
    update_site_meta(get_current_blog_id(), 'carrotstuff-' . $option, $new);
  }
});