Anyway to disable/hide the "Add node as xxxx" local action

Patch does not apply, probably only needs minor re-roll.

I see it disables the action links for form mode manager globally. This is probably a useful option but personally i would go for being able to hide or rename any specific action or operations link generated by Form mode manager, if i were to take this on. But a couple of alter hooks makes that possible too.

In an `example.module` file in your custom Example module— presuming you are not using bundle subclasses for your content, the ProgramApplication parts can be dropped and this will still work:

use Drupal\example\Entity\ProgramApplication;

/**
 * Implements hook_menu_local_actions_alter().
 */
function example_menu_local_actions_alter(&$local_actions) {
  // Remove "Create as" link for the content form mode 'form_mode_edit_only'.
  unset($local_actions['form_mode_manager.action:node.form_mode_edit_only']);
  // Shorten "Create content as form_mode" link to "Create form mode".
  $local_actions['form_mode_manager.action:node.application_forms']['title'] = t("Create application forms");
}

/**
 * Implements hook_entity_operation_alter().
 */
function example_entity_operation_alter(&$operations, $entity) {
  if ($entity instanceof ProgramApplication and isset($operations['application_forms'])) {
    // Shorten the edit link e.g. it the per-node dropdown on the content admin listing page.
    $operations['application_forms']['title'] = t("Edit application forms");
  }
}