"Add Product" form has breadcrumbs for "Product Settings"

I'm unsure of the logic behind this, but it confused me so thought I'd raise a discussion to establish why (and document for future folk seeing the same).

uc_product.module has the following code near the head of the function uc_product_form()

  $location = array();
  $location[] = menu_get_item('admin');
  $location[] = menu_get_item('admin/store');
  $location[] = menu_get_item('admin/store/products');
  $location[] = menu_get_item('admin/store/settings/products');
  $breadcrumb = array(l('Home', ''));
  foreach ($location as $item) {
    $breadcrumb[] = l($item['title'], $item['path']);
  }
  drupal_set_breadcrumb($breadcrumb);
 

This changes the node create form breadcrumbs to take people "back" to the product settings screen.

Depending on store settings, these paths may not be accessible to the user viewing the breadcrumbs.

Does anyone understand this behaviour well enough to explain it?

Related: #719996: Store Admin Breadcrumb Is Displayed To Sellers