Improved! Force categories to display on list view only

add_action('parse_query', 'use_list_view_for_categories', 60);

function use_list_view_for_categories($query) {
    // Run once
    remove_action('parse_query', 'use_list_view_for_categories', 60);

    // Interfere only for non-ajax Tribe category requests not already destined to be presented by list view
    if (defined('DOING_AJAX') && DOING_AJAX) return;
    if (!isset($query->tribe_is_event_category) || !$query->tribe_is_event_category) return;
    if (tribe_is_view('upcoming')) return;

    // Obtain the query term and get a link to list view for that term
    $main_tax_query = $query->tax_query->queries[0];
    $term = get_term_by('slug', $main_tax_query['terms'][0], TribeEvents::TAXONOMY);
    $link = tribe_get_listview_link($term->term_id);

    // Try to redirect
    wp_redirect($link);
    exit();
}