Default Exposed Filters does not affect query.

If you setup exposed filters, you will see, that they dont't change the query anymore.

Here is a export

$view = new view;
$view->name = 'frontpage';
$view->description = 'Emulates the default Drupal front page; you may set the default home page path to this view to make it your front page.';
$view->tag = 'default';
$view->view_php = '';
$view->base_table = 'node';
$view->is_cacheable = FALSE;
$view->api_version = 2;
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Defaults */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->display->display_options['header_format'] = '1';
$handler->display->display_options['footer_format'] = '1';
$handler->display->display_options['empty_format'] = '1';
$handler->display->display_options['access']['type'] = 'none';
$handler->display->display_options['cache']['type'] = 'time';
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'full';
$handler->display->display_options['style_plugin'] = 'default';
$handler->display->display_options['row_plugin'] = 'fields';
/* Field: Node: Title */
$handler->display->display_options['fields']['title']['id'] = 'title';
$handler->display->display_options['fields']['title']['table'] = 'node';
$handler->display->display_options['fields']['title']['field'] = 'title';
$handler->display->display_options['fields']['title']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['title']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['title']['alter']['trim'] = 0;
$handler->display->display_options['fields']['title']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['title']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['title']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['title']['alter']['html'] = 0;
$handler->display->display_options['fields']['title']['hide_empty'] = 0;
$handler->display->display_options['fields']['title']['empty_zero'] = 0;
$handler->display->display_options['fields']['title']['link_to_node'] = 0;
/* Sort criterion: Node: Sticky */
$handler->display->display_options['sorts']['sticky']['id'] = 'sticky';
$handler->display->display_options['sorts']['sticky']['table'] = 'node';
$handler->display->display_options['sorts']['sticky']['field'] = 'sticky';
$handler->display->display_options['sorts']['sticky']['order'] = 'DESC';
/* Sort criterion: Node: Post date */
$handler->display->display_options['sorts']['created']['id'] = 'created';
$handler->display->display_options['sorts']['created']['table'] = 'node';
$handler->display->display_options['sorts']['created']['field'] = 'created';
$handler->display->display_options['sorts']['created']['order'] = 'DESC';
/* Filter: Node: Promoted to front page */
$handler->display->display_options['filters']['promote']['id'] = 'promote';
$handler->display->display_options['filters']['promote']['table'] = 'node';
$handler->display->display_options['filters']['promote']['field'] = 'promote';
$handler->display->display_options['filters']['promote']['value'] = '1';
$handler->display->display_options['filters']['promote']['group'] = 0;
$handler->display->display_options['filters']['promote']['expose']['operator'] = FALSE;
/* Filter: Node: Published */
$handler->display->display_options['filters']['status']['id'] = 'status';
$handler->display->display_options['filters']['status']['table'] = 'node';
$handler->display->display_options['filters']['status']['field'] = 'status';
$handler->display->display_options['filters']['status']['value'] = '1';
$handler->display->display_options['filters']['status']['exposed'] = TRUE;
$handler->display->display_options['filters']['status']['expose']['label'] = 'Published';
$handler->display->display_options['filters']['status']['expose']['identifier'] = 'status';

/* Display: Page */
$handler = $view->new_display('page', 'Page', 'page');
$handler->display->display_options['path'] = 'frontpage';

/* Display: Feed */
$handler = $view->new_display('feed', 'Feed', 'feed');
$handler->display->display_options['defaults']['title'] = FALSE;
$handler->display->display_options['title'] = 'Front page feed';
$handler->display->display_options['style_plugin'] = 'rss';
$handler->display->display_options['style_options']['mission_description'] = 1;
$handler->display->display_options['row_plugin'] = 'node_rss';
$handler->display->display_options['path'] = 'rss.xml';
$handler->display->display_options['displays'] = array(
  'default' => 'default',
  'page' => 'page',
);
$handler->display->display_options['sitename_title'] = '1';

So whatever you set in the UI, the output doesn't get changed.